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Finding the Fourth Proportional to 150,402.38, 207,477.65 and 101,987.94

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Solution

The fourth proportional to 150,402.38, 207,477.65 and 101,987.94 is: 140,690.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,402.38 : 207,477.65 = 101,987.94 : x
  2. Step 2: Convert to fraction form
    150,402.38/207,477.65 = 101,987.94/x
  3. Step 3: Cross multiply
    150,402.38x = 207,477.65 × 101,987.94
  4. Step 4: Simplify right side
    150,402.38x = 21,160,218,119.54
  5. Step 5: Solve for x
    x = 21,160,218,119.54/150,402.38
  6. Step 6: Final answer
    x = 140,690.71

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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.