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Finding the Fourth Proportional to 123,612.64, 170,578.20 and 69,908.92

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Solution

The fourth proportional to 123,612.64, 170,578.20 and 69,908.92 is: 96,470.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,612.64 : 170,578.20 = 69,908.92 : x
  2. Step 2: Convert to fraction form
    123,612.64/170,578.20 = 69,908.92/x
  3. Step 3: Cross multiply
    123,612.64x = 170,578.20 × 69,908.92
  4. Step 4: Simplify right side
    123,612.64x = 11,924,937,737.54
  5. Step 5: Solve for x
    x = 11,924,937,737.54/123,612.64
  6. Step 6: Final answer
    x = 96,470.21

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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.