Home / 128,051,912.58-176,536,023.39-80,985,527.70

Finding the Fourth Proportional to 128,051,912.58, 176,536,023.39 and 80,985,527.70

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Solution

The fourth proportional to 128,051,912.58, 176,536,023.39 and 80,985,527.70 is: 111,648,961.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,051,912.58 : 176,536,023.39 = 80,985,527.70 : x
  2. Step 2: Convert to fraction form
    128,051,912.58/176,536,023.39 = 80,985,527.70/x
  3. Step 3: Cross multiply
    128,051,912.58x = 176,536,023.39 × 80,985,527.70
  4. Step 4: Simplify right side
    128,051,912.58x = 14,296,863,012,298,692
  5. Step 5: Solve for x
    x = 14,296,863,012,298,692/128,051,912.58
  6. Step 6: Final answer
    x = 111,648,961.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.