Home / 99,965.28-137,761.17-71,621.76

Finding the Fourth Proportional to 99,965.28, 137,761.17 and 71,621.76

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Solution

The fourth proportional to 99,965.28, 137,761.17 and 71,621.76 is: 98,701.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,965.28 : 137,761.17 = 71,621.76 : x
  2. Step 2: Convert to fraction form
    99,965.28/137,761.17 = 71,621.76/x
  3. Step 3: Cross multiply
    99,965.28x = 137,761.17 × 71,621.76
  4. Step 4: Simplify right side
    99,965.28x = 9,866,697,455.06
  5. Step 5: Solve for x
    x = 9,866,697,455.06/99,965.28
  6. Step 6: Final answer
    x = 98,701.24

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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.