Home / 131,643.32-181,593.96-80,680.75

Finding the Fourth Proportional to 131,643.32, 181,593.96 and 80,680.75

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Solution

The fourth proportional to 131,643.32, 181,593.96 and 80,680.75 is: 111,294.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,643.32 : 181,593.96 = 80,680.75 : x
  2. Step 2: Convert to fraction form
    131,643.32/181,593.96 = 80,680.75/x
  3. Step 3: Cross multiply
    131,643.32x = 181,593.96 × 80,680.75
  4. Step 4: Simplify right side
    131,643.32x = 14,651,136,888.27
  5. Step 5: Solve for x
    x = 14,651,136,888.27/131,643.32
  6. Step 6: Final answer
    x = 111,294.19

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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.