Home / 158,429.13-218,632.20-86,811.87

Finding the Fourth Proportional to 158,429.13, 218,632.20 and 86,811.87

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Solution

The fourth proportional to 158,429.13, 218,632.20 and 86,811.87 is: 119,800.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,429.13 : 218,632.20 = 86,811.87 : x
  2. Step 2: Convert to fraction form
    158,429.13/218,632.20 = 86,811.87/x
  3. Step 3: Cross multiply
    158,429.13x = 218,632.20 × 86,811.87
  4. Step 4: Simplify right side
    158,429.13x = 18,979,870,124.21
  5. Step 5: Solve for x
    x = 18,979,870,124.21/158,429.13
  6. Step 6: Final answer
    x = 119,800.38

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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.