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Finding the Fourth Proportional to 124,142.55, 171,315.63 and 67,553.97

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Solution

The fourth proportional to 124,142.55, 171,315.63 and 67,553.97 is: 93,223.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,142.55 : 171,315.63 = 67,553.97 : x
  2. Step 2: Convert to fraction form
    124,142.55/171,315.63 = 67,553.97/x
  3. Step 3: Cross multiply
    124,142.55x = 171,315.63 × 67,553.97
  4. Step 4: Simplify right side
    124,142.55x = 11,573,050,929.55
  5. Step 5: Solve for x
    x = 11,573,050,929.55/124,142.55
  6. Step 6: Final answer
    x = 93,223.89

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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.