Home / 89,120.35-133,681.29-71,306.87

Finding the Fourth Proportional to 89,120.35, 133,681.29 and 71,306.87

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Solution

The fourth proportional to 89,120.35, 133,681.29 and 71,306.87 is: 106,960.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,120.35 : 133,681.29 = 71,306.87 : x
  2. Step 2: Convert to fraction form
    89,120.35/133,681.29 = 71,306.87/x
  3. Step 3: Cross multiply
    89,120.35x = 133,681.29 × 71,306.87
  4. Step 4: Simplify right side
    89,120.35x = 9,532,393,431.66
  5. Step 5: Solve for x
    x = 9,532,393,431.66/89,120.35
  6. Step 6: Final answer
    x = 106,960.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.