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Finding the Fourth Proportional to 115,239.80, 159,037.08 and 67,496.78

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Solution

The fourth proportional to 115,239.80, 159,037.08 and 67,496.78 is: 93,149.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,239.80 : 159,037.08 = 67,496.78 : x
  2. Step 2: Convert to fraction form
    115,239.80/159,037.08 = 67,496.78/x
  3. Step 3: Cross multiply
    115,239.80x = 159,037.08 × 67,496.78
  4. Step 4: Simplify right side
    115,239.80x = 10,734,490,800.60
  5. Step 5: Solve for x
    x = 10,734,490,800.60/115,239.80
  6. Step 6: Final answer
    x = 93,149.16

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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.