Home / 148,986.11-205,600.14-87,767.88

Finding the Fourth Proportional to 148,986.11, 205,600.14 and 87,767.88

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Solution

The fourth proportional to 148,986.11, 205,600.14 and 87,767.88 is: 121,119.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,986.11 : 205,600.14 = 87,767.88 : x
  2. Step 2: Convert to fraction form
    148,986.11/205,600.14 = 87,767.88/x
  3. Step 3: Cross multiply
    148,986.11x = 205,600.14 × 87,767.88
  4. Step 4: Simplify right side
    148,986.11x = 18,045,087,387.50
  5. Step 5: Solve for x
    x = 18,045,087,387.50/148,986.11
  6. Step 6: Final answer
    x = 121,119.26

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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.