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Finding the Fourth Proportional to 99,872.73, 137,818.26 and 54,541.53

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Solution

The fourth proportional to 99,872.73, 137,818.26 and 54,541.53 is: 75,263.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,872.73 : 137,818.26 = 54,541.53 : x
  2. Step 2: Convert to fraction form
    99,872.73/137,818.26 = 54,541.53/x
  3. Step 3: Cross multiply
    99,872.73x = 137,818.26 × 54,541.53
  4. Step 4: Simplify right side
    99,872.73x = 7,516,818,762.34
  5. Step 5: Solve for x
    x = 7,516,818,762.34/99,872.73
  6. Step 6: Final answer
    x = 75,263.98

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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.