Home / 81,597.24-122,155.29-79,585.20

Finding the Fourth Proportional to 81,597.24, 122,155.29 and 79,585.20

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Solution

The fourth proportional to 81,597.24, 122,155.29 and 79,585.20 is: 119,143.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,597.24 : 122,155.29 = 79,585.20 : x
  2. Step 2: Convert to fraction form
    81,597.24/122,155.29 = 79,585.20/x
  3. Step 3: Cross multiply
    81,597.24x = 122,155.29 × 79,585.20
  4. Step 4: Simplify right side
    81,597.24x = 9,721,753,185.71
  5. Step 5: Solve for x
    x = 9,721,753,185.71/81,597.24
  6. Step 6: Final answer
    x = 119,143.16

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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.