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Finding the Fourth Proportional to 124,798.46, 172,221.46 and 68,209.70

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Solution

The fourth proportional to 124,798.46, 172,221.46 and 68,209.70 is: 94,129.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,798.46 : 172,221.46 = 68,209.70 : x
  2. Step 2: Convert to fraction form
    124,798.46/172,221.46 = 68,209.70/x
  3. Step 3: Cross multiply
    124,798.46x = 172,221.46 × 68,209.70
  4. Step 4: Simplify right side
    124,798.46x = 11,747,173,088.53
  5. Step 5: Solve for x
    x = 11,747,173,088.53/124,798.46
  6. Step 6: Final answer
    x = 94,129.15

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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.