Home / 131,780.06-181,855.70-71,349.42

Finding the Fourth Proportional to 131,780.06, 181,855.70 and 71,349.42

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Solution

The fourth proportional to 131,780.06, 181,855.70 and 71,349.42 is: 98,461.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,780.06 : 181,855.70 = 71,349.42 : x
  2. Step 2: Convert to fraction form
    131,780.06/181,855.70 = 71,349.42/x
  3. Step 3: Cross multiply
    131,780.06x = 181,855.70 × 71,349.42
  4. Step 4: Simplify right side
    131,780.06x = 12,975,299,311.47
  5. Step 5: Solve for x
    x = 12,975,299,311.47/131,780.06
  6. Step 6: Final answer
    x = 98,461.78

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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.