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Finding the Fourth Proportional to 125,805, 173,612.52 and 69,215.16

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Solution

The fourth proportional to 125,805, 173,612.52 and 69,215.16 is: 95,517.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,805 : 173,612.52 = 69,215.16 : x
  2. Step 2: Convert to fraction form
    125,805/173,612.52 = 69,215.16/x
  3. Step 3: Cross multiply
    125,805x = 173,612.52 × 69,215.16
  4. Step 4: Simplify right side
    125,805x = 12,016,618,349.80
  5. Step 5: Solve for x
    x = 12,016,618,349.80/125,805
  6. Step 6: Final answer
    x = 95,517.81

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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.