Home / 123,253.60-170,047.76-100,553.04

Finding the Fourth Proportional to 123,253.60, 170,047.76 and 100,553.04

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Solution

The fourth proportional to 123,253.60, 170,047.76 and 100,553.04 is: 138,728.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,253.60 : 170,047.76 = 100,553.04 : x
  2. Step 2: Convert to fraction form
    123,253.60/170,047.76 = 100,553.04/x
  3. Step 3: Cross multiply
    123,253.60x = 170,047.76 × 100,553.04
  4. Step 4: Simplify right side
    123,253.60x = 17,098,819,213.19
  5. Step 5: Solve for x
    x = 17,098,819,213.19/123,253.60
  6. Step 6: Final answer
    x = 138,728.76

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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.