Home / 120,839.81-181,278.15-61,643.18

Finding the Fourth Proportional to 120,839.81, 181,278.15 and 61,643.18

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Solution

The fourth proportional to 120,839.81, 181,278.15 and 61,643.18 is: 92,474.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,839.81 : 181,278.15 = 61,643.18 : x
  2. Step 2: Convert to fraction form
    120,839.81/181,278.15 = 61,643.18/x
  3. Step 3: Cross multiply
    120,839.81x = 181,278.15 × 61,643.18
  4. Step 4: Simplify right side
    120,839.81x = 11,174,561,630.52
  5. Step 5: Solve for x
    x = 11,174,561,630.52/120,839.81
  6. Step 6: Final answer
    x = 92,474.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.