Home / 136,165.43-187,895.12-78,793.31

Finding the Fourth Proportional to 136,165.43, 187,895.12 and 78,793.31

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Solution

The fourth proportional to 136,165.43, 187,895.12 and 78,793.31 is: 108,727.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,165.43 : 187,895.12 = 78,793.31 : x
  2. Step 2: Convert to fraction form
    136,165.43/187,895.12 = 78,793.31/x
  3. Step 3: Cross multiply
    136,165.43x = 187,895.12 × 78,793.31
  4. Step 4: Simplify right side
    136,165.43x = 14,804,877,104.21
  5. Step 5: Solve for x
    x = 14,804,877,104.21/136,165.43
  6. Step 6: Final answer
    x = 108,727.14

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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.