Home / 131,855.78-181,961.85-71,426.42

Finding the Fourth Proportional to 131,855.78, 181,961.85 and 71,426.42

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Solution

The fourth proportional to 131,855.78, 181,961.85 and 71,426.42 is: 98,568.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,855.78 : 181,961.85 = 71,426.42 : x
  2. Step 2: Convert to fraction form
    131,855.78/181,961.85 = 71,426.42/x
  3. Step 3: Cross multiply
    131,855.78x = 181,961.85 × 71,426.42
  4. Step 4: Simplify right side
    131,855.78x = 12,996,884,184.24
  5. Step 5: Solve for x
    x = 12,996,884,184.24/131,855.78
  6. Step 6: Final answer
    x = 98,568.94

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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.