Home / 99,727.20-137,615.76-57,276.72

Finding the Fourth Proportional to 99,727.20, 137,615.76 and 57,276.72

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Solution

The fourth proportional to 99,727.20, 137,615.76 and 57,276.72 is: 79,037.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,727.20 : 137,615.76 = 57,276.72 : x
  2. Step 2: Convert to fraction form
    99,727.20/137,615.76 = 57,276.72/x
  3. Step 3: Cross multiply
    99,727.20x = 137,615.76 × 57,276.72
  4. Step 4: Simplify right side
    99,727.20x = 7,882,179,353.11
  5. Step 5: Solve for x
    x = 7,882,179,353.11/99,727.20
  6. Step 6: Final answer
    x = 79,037.41

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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.