Home / 91,327.20-136,990.80-42,175.20

Finding the Fourth Proportional to 91,327.20, 136,990.80 and 42,175.20

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Solution

The fourth proportional to 91,327.20, 136,990.80 and 42,175.20 is: 63,262.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,327.20 : 136,990.80 = 42,175.20 : x
  2. Step 2: Convert to fraction form
    91,327.20/136,990.80 = 42,175.20/x
  3. Step 3: Cross multiply
    91,327.20x = 136,990.80 × 42,175.20
  4. Step 4: Simplify right side
    91,327.20x = 5,777,614,388.16
  5. Step 5: Solve for x
    x = 5,777,614,388.16/91,327.20
  6. Step 6: Final answer
    x = 63,262.80

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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.