Home / 138,849.24-191,612.86-75,187.04

Finding the Fourth Proportional to 138,849.24, 191,612.86 and 75,187.04

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Solution

The fourth proportional to 138,849.24, 191,612.86 and 75,187.04 is: 103,758.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,849.24 : 191,612.86 = 75,187.04 : x
  2. Step 2: Convert to fraction form
    138,849.24/191,612.86 = 75,187.04/x
  3. Step 3: Cross multiply
    138,849.24x = 191,612.86 × 75,187.04
  4. Step 4: Simplify right side
    138,849.24x = 14,406,803,769.33
  5. Step 5: Solve for x
    x = 14,406,803,769.33/138,849.24
  6. Step 6: Final answer
    x = 103,758.61

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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.