Home / 99,635.71-137,535.66-72,989.85

Finding the Fourth Proportional to 99,635.71, 137,535.66 and 72,989.85

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Solution

The fourth proportional to 99,635.71, 137,535.66 and 72,989.85 is: 100,754.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,635.71 : 137,535.66 = 72,989.85 : x
  2. Step 2: Convert to fraction form
    99,635.71/137,535.66 = 72,989.85/x
  3. Step 3: Cross multiply
    99,635.71x = 137,535.66 × 72,989.85
  4. Step 4: Simplify right side
    99,635.71x = 10,038,707,193.05
  5. Step 5: Solve for x
    x = 10,038,707,193.05/99,635.71
  6. Step 6: Final answer
    x = 100,754.11

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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.