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Finding the Fourth Proportional to 99,601.50, 137,446.06 and 54,278.51

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Solution

The fourth proportional to 99,601.50, 137,446.06 and 54,278.51 is: 74,902.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,601.50 : 137,446.06 = 54,278.51 : x
  2. Step 2: Convert to fraction form
    99,601.50/137,446.06 = 54,278.51/x
  3. Step 3: Cross multiply
    99,601.50x = 137,446.06 × 54,278.51
  4. Step 4: Simplify right side
    99,601.50x = 7,460,367,342.17
  5. Step 5: Solve for x
    x = 7,460,367,342.17/99,601.50
  6. Step 6: Final answer
    x = 74,902.16

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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.