Home / 158,499.28-218,729.06-86,879.79

Finding the Fourth Proportional to 158,499.28, 218,729.06 and 86,879.79

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Solution

The fourth proportional to 158,499.28, 218,729.06 and 86,879.79 is: 119,894.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,499.28 : 218,729.06 = 86,879.79 : x
  2. Step 2: Convert to fraction form
    158,499.28/218,729.06 = 86,879.79/x
  3. Step 3: Cross multiply
    158,499.28x = 218,729.06 × 86,879.79
  4. Step 4: Simplify right side
    158,499.28x = 19,003,134,691.10
  5. Step 5: Solve for x
    x = 19,003,134,691.10/158,499.28
  6. Step 6: Final answer
    x = 119,894.14

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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.