Home / 129,668.16-178,959.60-75,974.61

Finding the Fourth Proportional to 129,668.16, 178,959.60 and 75,974.61

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Solution

The fourth proportional to 129,668.16, 178,959.60 and 75,974.61 is: 104,855.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,668.16 : 178,959.60 = 75,974.61 : x
  2. Step 2: Convert to fraction form
    129,668.16/178,959.60 = 75,974.61/x
  3. Step 3: Cross multiply
    129,668.16x = 178,959.60 × 75,974.61
  4. Step 4: Simplify right side
    129,668.16x = 13,596,385,815.76
  5. Step 5: Solve for x
    x = 13,596,385,815.76/129,668.16
  6. Step 6: Final answer
    x = 104,855.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.