Home / 91,529.60-137,294.40-87,252.80

Finding the Fourth Proportional to 91,529.60, 137,294.40 and 87,252.80

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Solution

The fourth proportional to 91,529.60, 137,294.40 and 87,252.80 is: 130,879.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,529.60 : 137,294.40 = 87,252.80 : x
  2. Step 2: Convert to fraction form
    91,529.60/137,294.40 = 87,252.80/x
  3. Step 3: Cross multiply
    91,529.60x = 137,294.40 × 87,252.80
  4. Step 4: Simplify right side
    91,529.60x = 11,979,320,824.32
  5. Step 5: Solve for x
    x = 11,979,320,824.32/91,529.60
  6. Step 6: Final answer
    x = 130,879.20

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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.