Home / 99,916.80-137,885.28-54,595.20

Finding the Fourth Proportional to 99,916.80, 137,885.28 and 54,595.20

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Solution

The fourth proportional to 99,916.80, 137,885.28 and 54,595.20 is: 75,341.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,916.80 : 137,885.28 = 54,595.20 : x
  2. Step 2: Convert to fraction form
    99,916.80/137,885.28 = 54,595.20/x
  3. Step 3: Cross multiply
    99,916.80x = 137,885.28 × 54,595.20
  4. Step 4: Simplify right side
    99,916.80x = 7,527,874,438.66
  5. Step 5: Solve for x
    x = 7,527,874,438.66/99,916.80
  6. Step 6: Final answer
    x = 75,341.43

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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.