Home / 131,520.45-181,498.11-71,091.09

Finding the Fourth Proportional to 131,520.45, 181,498.11 and 71,091.09

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Solution

The fourth proportional to 131,520.45, 181,498.11 and 71,091.09 is: 98,105.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,520.45 : 181,498.11 = 71,091.09 : x
  2. Step 2: Convert to fraction form
    131,520.45/181,498.11 = 71,091.09/x
  3. Step 3: Cross multiply
    131,520.45x = 181,498.11 × 71,091.09
  4. Step 4: Simplify right side
    131,520.45x = 12,902,898,472.84
  5. Step 5: Solve for x
    x = 12,902,898,472.84/131,520.45
  6. Step 6: Final answer
    x = 98,105.64

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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.