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Finding the Fourth Proportional to 125,081.97, 172,614.50 and 67,722.54

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Solution

The fourth proportional to 125,081.97, 172,614.50 and 67,722.54 is: 93,457.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,081.97 : 172,614.50 = 67,722.54 : x
  2. Step 2: Convert to fraction form
    125,081.97/172,614.50 = 67,722.54/x
  3. Step 3: Cross multiply
    125,081.97x = 172,614.50 × 67,722.54
  4. Step 4: Simplify right side
    125,081.97x = 11,689,892,042.22
  5. Step 5: Solve for x
    x = 11,689,892,042.22/125,081.97
  6. Step 6: Final answer
    x = 93,457.85

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1.5x scale

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.