Home / 158,337.13-218,505.33-86,721.67

Finding the Fourth Proportional to 158,337.13, 218,505.33 and 86,721.67

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Solution

The fourth proportional to 158,337.13, 218,505.33 and 86,721.67 is: 119,675.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,337.13 : 218,505.33 = 86,721.67 : x
  2. Step 2: Convert to fraction form
    158,337.13/218,505.33 = 86,721.67/x
  3. Step 3: Cross multiply
    158,337.13x = 218,505.33 × 86,721.67
  4. Step 4: Simplify right side
    158,337.13x = 18,949,147,121.50
  5. Step 5: Solve for x
    x = 18,949,147,121.50/158,337.13
  6. Step 6: Final answer
    x = 119,675.95

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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.