Home / 149,024.93-205,655.78-81,042.55

Finding the Fourth Proportional to 149,024.93, 205,655.78 and 81,042.55

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Solution

The fourth proportional to 149,024.93, 205,655.78 and 81,042.55 is: 111,839.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,024.93 : 205,655.78 = 81,042.55 : x
  2. Step 2: Convert to fraction form
    149,024.93/205,655.78 = 81,042.55/x
  3. Step 3: Cross multiply
    149,024.93x = 205,655.78 × 81,042.55
  4. Step 4: Simplify right side
    149,024.93x = 16,666,868,833.44
  5. Step 5: Solve for x
    x = 16,666,868,833.44/149,024.93
  6. Step 6: Final answer
    x = 111,839.47

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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.