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Finding the Fourth Proportional to 101,587.52, 140,144.10 and 65,789.30

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Solution

The fourth proportional to 101,587.52, 140,144.10 and 65,789.30 is: 90,759.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,587.52 : 140,144.10 = 65,789.30 : x
  2. Step 2: Convert to fraction form
    101,587.52/140,144.10 = 65,789.30/x
  3. Step 3: Cross multiply
    101,587.52x = 140,144.10 × 65,789.30
  4. Step 4: Simplify right side
    101,587.52x = 9,219,982,238.13
  5. Step 5: Solve for x
    x = 9,219,982,238.13/101,587.52
  6. Step 6: Final answer
    x = 90,759.01

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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.