Home / 89,368.20-133,760.70-71,677.80

Finding the Fourth Proportional to 89,368.20, 133,760.70 and 71,677.80

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Solution

The fourth proportional to 89,368.20, 133,760.70 and 71,677.80 is: 107,282.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,368.20 : 133,760.70 = 71,677.80 : x
  2. Step 2: Convert to fraction form
    89,368.20/133,760.70 = 71,677.80/x
  3. Step 3: Cross multiply
    89,368.20x = 133,760.70 × 71,677.80
  4. Step 4: Simplify right side
    89,368.20x = 9,587,672,702.46
  5. Step 5: Solve for x
    x = 9,587,672,702.46/89,368.20
  6. Step 6: Final answer
    x = 107,282.82

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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.