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Finding the Fourth Proportional to 125,149.54, 172,706.54 and 67,789.48

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Solution

The fourth proportional to 125,149.54, 172,706.54 and 67,789.48 is: 93,549.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,149.54 : 172,706.54 = 67,789.48 : x
  2. Step 2: Convert to fraction form
    125,149.54/172,706.54 = 67,789.48/x
  3. Step 3: Cross multiply
    125,149.54x = 172,706.54 × 67,789.48
  4. Step 4: Simplify right side
    125,149.54x = 11,707,686,625.71
  5. Step 5: Solve for x
    x = 11,707,686,625.71/125,149.54
  6. Step 6: Final answer
    x = 93,549.58

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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.