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Finding the Fourth Proportional to 502,106.64, 753,159.56 and 128,129.64

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Solution

The fourth proportional to 502,106.64, 753,159.56 and 128,129.64 is: 192,194.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,106.64 : 753,159.56 = 128,129.64 : x
  2. Step 2: Convert to fraction form
    502,106.64/753,159.56 = 128,129.64/x
  3. Step 3: Cross multiply
    502,106.64x = 753,159.56 × 128,129.64
  4. Step 4: Simplify right side
    502,106.64x = 96,502,062,644.71
  5. Step 5: Solve for x
    x = 96,502,062,644.71/502,106.64
  6. Step 6: Final answer
    x = 192,194.36

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Similar ratio
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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.