Home / 158,337.87-218,500.38-86,718.48

Finding the Fourth Proportional to 158,337.87, 218,500.38 and 86,718.48

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Solution

The fourth proportional to 158,337.87, 218,500.38 and 86,718.48 is: 119,668.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,337.87 : 218,500.38 = 86,718.48 : x
  2. Step 2: Convert to fraction form
    158,337.87/218,500.38 = 86,718.48/x
  3. Step 3: Cross multiply
    158,337.87x = 218,500.38 × 86,718.48
  4. Step 4: Simplify right side
    158,337.87x = 18,948,020,833.02
  5. Step 5: Solve for x
    x = 18,948,020,833.02/158,337.87
  6. Step 6: Final answer
    x = 119,668.28

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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.