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Finding the Fourth Proportional to 123,472.68, 170,392.12 and 66,884.28

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Solution

The fourth proportional to 123,472.68, 170,392.12 and 66,884.28 is: 92,300.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,472.68 : 170,392.12 = 66,884.28 : x
  2. Step 2: Convert to fraction form
    123,472.68/170,392.12 = 66,884.28/x
  3. Step 3: Cross multiply
    123,472.68x = 170,392.12 × 66,884.28
  4. Step 4: Simplify right side
    123,472.68x = 11,396,554,263.87
  5. Step 5: Solve for x
    x = 11,396,554,263.87/123,472.68
  6. Step 6: Final answer
    x = 92,300.21

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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.