Home / 131,449.13-181,399.88-71,019.76

Finding the Fourth Proportional to 131,449.13, 181,399.88 and 71,019.76

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Solution

The fourth proportional to 131,449.13, 181,399.88 and 71,019.76 is: 98,007.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,449.13 : 181,399.88 = 71,019.76 : x
  2. Step 2: Convert to fraction form
    131,449.13/181,399.88 = 71,019.76/x
  3. Step 3: Cross multiply
    131,449.13x = 181,399.88 × 71,019.76
  4. Step 4: Simplify right side
    131,449.13x = 12,882,975,941.63
  5. Step 5: Solve for x
    x = 12,882,975,941.63/131,449.13
  6. Step 6: Final answer
    x = 98,007.31

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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.