Home / 131,577.55-181,578.05-72,642.87

Finding the Fourth Proportional to 131,577.55, 181,578.05 and 72,642.87

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Solution

The fourth proportional to 131,577.55, 181,578.05 and 72,642.87 is: 100,247.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,577.55 : 181,578.05 = 72,642.87 : x
  2. Step 2: Convert to fraction form
    131,577.55/181,578.05 = 72,642.87/x
  3. Step 3: Cross multiply
    131,577.55x = 181,578.05 × 72,642.87
  4. Step 4: Simplify right side
    131,577.55x = 13,190,350,681.00
  5. Step 5: Solve for x
    x = 13,190,350,681.00/131,577.55
  6. Step 6: Final answer
    x = 100,247.73

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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.