Home / 136,336.80-204,467.76-86,341.92

Finding the Fourth Proportional to 136,336.80, 204,467.76 and 86,341.92

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Solution

The fourth proportional to 136,336.80, 204,467.76 and 86,341.92 is: 129,489.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,336.80 : 204,467.76 = 86,341.92 : x
  2. Step 2: Convert to fraction form
    136,336.80/204,467.76 = 86,341.92/x
  3. Step 3: Cross multiply
    136,336.80x = 204,467.76 × 86,341.92
  4. Step 4: Simplify right side
    136,336.80x = 17,654,138,976.50
  5. Step 5: Solve for x
    x = 17,654,138,976.50/136,336.80
  6. Step 6: Final answer
    x = 129,489.17

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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.