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Finding the Fourth Proportional to 101,637.28, 140,168.04 and 65,789.92

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Solution

The fourth proportional to 101,637.28, 140,168.04 and 65,789.92 is: 90,730.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,637.28 : 140,168.04 = 65,789.92 : x
  2. Step 2: Convert to fraction form
    101,637.28/140,168.04 = 65,789.92/x
  3. Step 3: Cross multiply
    101,637.28x = 140,168.04 × 65,789.92
  4. Step 4: Simplify right side
    101,637.28x = 9,221,644,138.16
  5. Step 5: Solve for x
    x = 9,221,644,138.16/101,637.28
  6. Step 6: Final answer
    x = 90,730.92

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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.