Home / 131,855.91-181,961.54-71,426.40

Finding the Fourth Proportional to 131,855.91, 181,961.54 and 71,426.40

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Solution

The fourth proportional to 131,855.91, 181,961.54 and 71,426.40 is: 98,568.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,855.91 : 181,961.54 = 71,426.40 : x
  2. Step 2: Convert to fraction form
    131,855.91/181,961.54 = 71,426.40/x
  3. Step 3: Cross multiply
    131,855.91x = 181,961.54 × 71,426.40
  4. Step 4: Simplify right side
    131,855.91x = 12,996,857,740.66
  5. Step 5: Solve for x
    x = 12,996,857,740.66/131,855.91
  6. Step 6: Final answer
    x = 98,568.64

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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.