Home / 91,624.64-137,319.50-79,728.98

Finding the Fourth Proportional to 91,624.64, 137,319.50 and 79,728.98

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Solution

The fourth proportional to 91,624.64, 137,319.50 and 79,728.98 is: 119,491.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,624.64 : 137,319.50 = 79,728.98 : x
  2. Step 2: Convert to fraction form
    91,624.64/137,319.50 = 79,728.98/x
  3. Step 3: Cross multiply
    91,624.64x = 137,319.50 × 79,728.98
  4. Step 4: Simplify right side
    91,624.64x = 10,948,343,181.83
  5. Step 5: Solve for x
    x = 10,948,343,181.83/91,624.64
  6. Step 6: Final answer
    x = 119,491.26

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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.