Home / 163,848.20-245,780.40-85,116.20

Finding the Fourth Proportional to 163,848.20, 245,780.40 and 85,116.20

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Solution

The fourth proportional to 163,848.20, 245,780.40 and 85,116.20 is: 127,678.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,848.20 : 245,780.40 = 85,116.20 : x
  2. Step 2: Convert to fraction form
    163,848.20/245,780.40 = 85,116.20/x
  3. Step 3: Cross multiply
    163,848.20x = 245,780.40 × 85,116.20
  4. Step 4: Simplify right side
    163,848.20x = 20,919,893,682.48
  5. Step 5: Solve for x
    x = 20,919,893,682.48/163,848.20
  6. Step 6: Final answer
    x = 127,678.51

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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.