Home / 131,711.13-181,764.14-77,976.54

Finding the Fourth Proportional to 131,711.13, 181,764.14 and 77,976.54

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Solution

The fourth proportional to 131,711.13, 181,764.14 and 77,976.54 is: 107,609.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,711.13 : 181,764.14 = 77,976.54 : x
  2. Step 2: Convert to fraction form
    131,711.13/181,764.14 = 77,976.54/x
  3. Step 3: Cross multiply
    131,711.13x = 181,764.14 × 77,976.54
  4. Step 4: Simplify right side
    131,711.13x = 14,173,338,343.39
  5. Step 5: Solve for x
    x = 14,173,338,343.39/131,711.13
  6. Step 6: Final answer
    x = 107,609.27

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1.5x scale

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.