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Finding the Fourth Proportional to 124,160.84, 185,906.62 and 78,937.61

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Solution

The fourth proportional to 124,160.84, 185,906.62 and 78,937.61 is: 118,193.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,160.84 : 185,906.62 = 78,937.61 : x
  2. Step 2: Convert to fraction form
    124,160.84/185,906.62 = 78,937.61/x
  3. Step 3: Cross multiply
    124,160.84x = 185,906.62 × 78,937.61
  4. Step 4: Simplify right side
    124,160.84x = 14,675,023,871.29
  5. Step 5: Solve for x
    x = 14,675,023,871.29/124,160.84
  6. Step 6: Final answer
    x = 118,193.66

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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.