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Finding the Fourth Proportional to 99,433.53, 137,218.29 and 54,721.53

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Solution

The fourth proportional to 99,433.53, 137,218.29 and 54,721.53 is: 75,515.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,433.53 : 137,218.29 = 54,721.53 : x
  2. Step 2: Convert to fraction form
    99,433.53/137,218.29 = 54,721.53/x
  3. Step 3: Cross multiply
    99,433.53x = 137,218.29 × 54,721.53
  4. Step 4: Simplify right side
    99,433.53x = 7,508,794,772.78
  5. Step 5: Solve for x
    x = 7,508,794,772.78/99,433.53
  6. Step 6: Final answer
    x = 75,515.72

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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.