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Finding the Fourth Proportional to 96,758.70, 145,138.05 and 73,139.10

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Solution

The fourth proportional to 96,758.70, 145,138.05 and 73,139.10 is: 109,708.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,758.70 : 145,138.05 = 73,139.10 : x
  2. Step 2: Convert to fraction form
    96,758.70/145,138.05 = 73,139.10/x
  3. Step 3: Cross multiply
    96,758.70x = 145,138.05 × 73,139.10
  4. Step 4: Simplify right side
    96,758.70x = 10,615,266,352.76
  5. Step 5: Solve for x
    x = 10,615,266,352.76/96,758.70
  6. Step 6: Final answer
    x = 109,708.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.