Home / 99,311.40-137,049.48-53,989.38

Finding the Fourth Proportional to 99,311.40, 137,049.48 and 53,989.38

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Solution

The fourth proportional to 99,311.40, 137,049.48 and 53,989.38 is: 74,505.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,311.40 : 137,049.48 = 53,989.38 : x
  2. Step 2: Convert to fraction form
    99,311.40/137,049.48 = 53,989.38/x
  3. Step 3: Cross multiply
    99,311.40x = 137,049.48 × 53,989.38
  4. Step 4: Simplify right side
    99,311.40x = 7,399,216,454.52
  5. Step 5: Solve for x
    x = 7,399,216,454.52/99,311.40
  6. Step 6: Final answer
    x = 74,505.21

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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.