Home / 165,328,780,005.52-247,791,697,191.60-85,696,427,628.88

Finding the Fourth Proportional to 165,328,780,005.52, 247,791,697,191.60 and 85,696,427,628.88

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Solution

The fourth proportional to 165,328,780,005.52, 247,791,697,191.60 and 85,696,427,628.88 is: 128,440,210,135.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,328,780,005.52 : 247,791,697,191.60 = 85,696,427,628.88 : x
  2. Step 2: Convert to fraction form
    165,328,780,005.52/247,791,697,191.60 = 85,696,427,628.88/x
  3. Step 3: Cross multiply
    165,328,780,005.52x = 247,791,697,191.60 × 85,696,427,628.88
  4. Step 4: Simplify right side
    165,328,780,005.52x = 21,234,863,245,417,296,953,344
  5. Step 5: Solve for x
    x = 21,234,863,245,417,296,953,344/165,328,780,005.52
  6. Step 6: Final answer
    x = 128,440,210,135.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.