Home / 158,131.09-218,235.92-86,521.87

Finding the Fourth Proportional to 158,131.09, 218,235.92 and 86,521.87

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Solution

The fourth proportional to 158,131.09, 218,235.92 and 86,521.87 is: 119,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,131.09 : 218,235.92 = 86,521.87 : x
  2. Step 2: Convert to fraction form
    158,131.09/218,235.92 = 86,521.87/x
  3. Step 3: Cross multiply
    158,131.09x = 218,235.92 × 86,521.87
  4. Step 4: Simplify right side
    158,131.09x = 18,882,179,899.57
  5. Step 5: Solve for x
    x = 18,882,179,899.57/158,131.09
  6. Step 6: Final answer
    x = 119,408.40

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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.