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Finding the Fourth Proportional to 123,505.01, 170,371.17 and 75,121.74

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Solution

The fourth proportional to 123,505.01, 170,371.17 and 75,121.74 is: 103,628.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,505.01 : 170,371.17 = 75,121.74 : x
  2. Step 2: Convert to fraction form
    123,505.01/170,371.17 = 75,121.74/x
  3. Step 3: Cross multiply
    123,505.01x = 170,371.17 × 75,121.74
  4. Step 4: Simplify right side
    123,505.01x = 12,798,578,468.35
  5. Step 5: Solve for x
    x = 12,798,578,468.35/123,505.01
  6. Step 6: Final answer
    x = 103,628.01

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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.