Home / 131,081.12-180,891.84-71,465.12

Finding the Fourth Proportional to 131,081.12, 180,891.84 and 71,465.12

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Solution

The fourth proportional to 131,081.12, 180,891.84 and 71,465.12 is: 98,621.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,081.12 : 180,891.84 = 71,465.12 : x
  2. Step 2: Convert to fraction form
    131,081.12/180,891.84 = 71,465.12/x
  3. Step 3: Cross multiply
    131,081.12x = 180,891.84 × 71,465.12
  4. Step 4: Simplify right side
    131,081.12x = 12,927,457,052.62
  5. Step 5: Solve for x
    x = 12,927,457,052.62/131,081.12
  6. Step 6: Final answer
    x = 98,621.81

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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.