Home / 99,279.31-148,992.80-40,115.49

Finding the Fourth Proportional to 99,279.31, 148,992.80 and 40,115.49

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Solution

The fourth proportional to 99,279.31, 148,992.80 and 40,115.49 is: 60,203.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,279.31 : 148,992.80 = 40,115.49 : x
  2. Step 2: Convert to fraction form
    99,279.31/148,992.80 = 40,115.49/x
  3. Step 3: Cross multiply
    99,279.31x = 148,992.80 × 40,115.49
  4. Step 4: Simplify right side
    99,279.31x = 5,976,919,178.47
  5. Step 5: Solve for x
    x = 5,976,919,178.47/99,279.31
  6. Step 6: Final answer
    x = 60,203.07

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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.