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Finding the Fourth Proportional to 125,091.61, 172,626.50 and 67,730.97

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Solution

The fourth proportional to 125,091.61, 172,626.50 and 67,730.97 is: 93,468.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,091.61 : 172,626.50 = 67,730.97 : x
  2. Step 2: Convert to fraction form
    125,091.61/172,626.50 = 67,730.97/x
  3. Step 3: Cross multiply
    125,091.61x = 172,626.50 × 67,730.97
  4. Step 4: Simplify right side
    125,091.61x = 11,692,159,659.03
  5. Step 5: Solve for x
    x = 11,692,159,659.03/125,091.61
  6. Step 6: Final answer
    x = 93,468.78

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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.