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Finding the Fourth Proportional to 125,001.40, 172,497.68 and 68,411.56

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Solution

The fourth proportional to 125,001.40, 172,497.68 and 68,411.56 is: 94,405.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,001.40 : 172,497.68 = 68,411.56 : x
  2. Step 2: Convert to fraction form
    125,001.40/172,497.68 = 68,411.56/x
  3. Step 3: Cross multiply
    125,001.40x = 172,497.68 × 68,411.56
  4. Step 4: Simplify right side
    125,001.40x = 11,800,835,385.18
  5. Step 5: Solve for x
    x = 11,800,835,385.18/125,001.40
  6. Step 6: Final answer
    x = 94,405.63

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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.