Home / 99,681.57-137,557.31-54,358.29

Finding the Fourth Proportional to 99,681.57, 137,557.31 and 54,358.29

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Solution

The fourth proportional to 99,681.57, 137,557.31 and 54,358.29 is: 75,012.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,681.57 : 137,557.31 = 54,358.29 : x
  2. Step 2: Convert to fraction form
    99,681.57/137,557.31 = 54,358.29/x
  3. Step 3: Cross multiply
    99,681.57x = 137,557.31 × 54,358.29
  4. Step 4: Simplify right side
    99,681.57x = 7,477,379,876.81
  5. Step 5: Solve for x
    x = 7,477,379,876.81/99,681.57
  6. Step 6: Final answer
    x = 75,012.66

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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.