Home / 136,274.77-188,045.20-78,932.71

Finding the Fourth Proportional to 136,274.77, 188,045.20 and 78,932.71

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Solution

The fourth proportional to 136,274.77, 188,045.20 and 78,932.71 is: 108,919.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,274.77 : 188,045.20 = 78,932.71 : x
  2. Step 2: Convert to fraction form
    136,274.77/188,045.20 = 78,932.71/x
  3. Step 3: Cross multiply
    136,274.77x = 188,045.20 × 78,932.71
  4. Step 4: Simplify right side
    136,274.77x = 14,842,917,572.21
  5. Step 5: Solve for x
    x = 14,842,917,572.21/136,274.77
  6. Step 6: Final answer
    x = 108,919.04

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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.