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Finding the Fourth Proportional to 169,488,201.90, 254,265,480.45 and 72,443,721.90

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Solution

The fourth proportional to 169,488,201.90, 254,265,480.45 and 72,443,721.90 is: 108,679,763.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,488,201.90 : 254,265,480.45 = 72,443,721.90 : x
  2. Step 2: Convert to fraction form
    169,488,201.90/254,265,480.45 = 72,443,721.90/x
  3. Step 3: Cross multiply
    169,488,201.90x = 254,265,480.45 × 72,443,721.90
  4. Step 4: Simplify right side
    169,488,201.90x = 18,419,937,754,489,688
  5. Step 5: Solve for x
    x = 18,419,937,754,489,688/169,488,201.90
  6. Step 6: Final answer
    x = 108,679,763.83

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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.