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Finding the Fourth Proportional to 123,149.70, 169,946.50 and 66,561.07

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Solution

The fourth proportional to 123,149.70, 169,946.50 and 66,561.07 is: 91,854.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,149.70 : 169,946.50 = 66,561.07 : x
  2. Step 2: Convert to fraction form
    123,149.70/169,946.50 = 66,561.07/x
  3. Step 3: Cross multiply
    123,149.70x = 169,946.50 × 66,561.07
  4. Step 4: Simplify right side
    123,149.70x = 11,311,820,882.76
  5. Step 5: Solve for x
    x = 11,311,820,882.76/123,149.70
  6. Step 6: Final answer
    x = 91,854.23

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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.