Home / 80,329.59-119,776.22-78,122.61

Finding the Fourth Proportional to 80,329.59, 119,776.22 and 78,122.61

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Solution

The fourth proportional to 80,329.59, 119,776.22 and 78,122.61 is: 116,485.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,329.59 : 119,776.22 = 78,122.61 : x
  2. Step 2: Convert to fraction form
    80,329.59/119,776.22 = 78,122.61/x
  3. Step 3: Cross multiply
    80,329.59x = 119,776.22 × 78,122.61
  4. Step 4: Simplify right side
    80,329.59x = 9,357,230,323.45
  5. Step 5: Solve for x
    x = 9,357,230,323.45/80,329.59
  6. Step 6: Final answer
    x = 116,485.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.