Home / 131,538.88-181,480.80-80,498.35

Finding the Fourth Proportional to 131,538.88, 181,480.80 and 80,498.35

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Solution

The fourth proportional to 131,538.88, 181,480.80 and 80,498.35 is: 111,061.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,538.88 : 181,480.80 = 80,498.35 : x
  2. Step 2: Convert to fraction form
    131,538.88/181,480.80 = 80,498.35/x
  3. Step 3: Cross multiply
    131,538.88x = 181,480.80 × 80,498.35
  4. Step 4: Simplify right side
    131,538.88x = 14,608,904,956.68
  5. Step 5: Solve for x
    x = 14,608,904,956.68/131,538.88
  6. Step 6: Final answer
    x = 111,061.50

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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.