Home / 131,177.80-181,052.26-83,421.92

Finding the Fourth Proportional to 131,177.80, 181,052.26 and 83,421.92

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Solution

The fourth proportional to 131,177.80, 181,052.26 and 83,421.92 is: 115,139.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,177.80 : 181,052.26 = 83,421.92 : x
  2. Step 2: Convert to fraction form
    131,177.80/181,052.26 = 83,421.92/x
  3. Step 3: Cross multiply
    131,177.80x = 181,052.26 × 83,421.92
  4. Step 4: Simplify right side
    131,177.80x = 15,103,727,149.54
  5. Step 5: Solve for x
    x = 15,103,727,149.54/131,177.80
  6. Step 6: Final answer
    x = 115,139.35

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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.