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Finding the Fourth Proportional to 169,655,129.20, 254,482,693.80 and 83,561,687.20

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Solution

The fourth proportional to 169,655,129.20, 254,482,693.80 and 83,561,687.20 is: 125,342,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,655,129.20 : 254,482,693.80 = 83,561,687.20 : x
  2. Step 2: Convert to fraction form
    169,655,129.20/254,482,693.80 = 83,561,687.20/x
  3. Step 3: Cross multiply
    169,655,129.20x = 254,482,693.80 × 83,561,687.20
  4. Step 4: Simplify right side
    169,655,129.20x = 21,265,003,257,128,980
  5. Step 5: Solve for x
    x = 21,265,003,257,128,980/169,655,129.20
  6. Step 6: Final answer
    x = 125,342,530.80

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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.