Home / 99,669.38-137,541.99-54,347.72

Finding the Fourth Proportional to 99,669.38, 137,541.99 and 54,347.72

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Solution

The fourth proportional to 99,669.38, 137,541.99 and 54,347.72 is: 74,998.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,669.38 : 137,541.99 = 54,347.72 : x
  2. Step 2: Convert to fraction form
    99,669.38/137,541.99 = 54,347.72/x
  3. Step 3: Cross multiply
    99,669.38x = 137,541.99 × 54,347.72
  4. Step 4: Simplify right side
    99,669.38x = 7,475,093,560.76
  5. Step 5: Solve for x
    x = 7,475,093,560.76/99,669.38
  6. Step 6: Final answer
    x = 74,998.90

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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.