Home / 149,040.48-205,585.92-91,689.60

Finding the Fourth Proportional to 149,040.48, 205,585.92 and 91,689.60

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Solution

The fourth proportional to 149,040.48, 205,585.92 and 91,689.60 is: 126,476.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,040.48 : 205,585.92 = 91,689.60 : x
  2. Step 2: Convert to fraction form
    149,040.48/205,585.92 = 91,689.60/x
  3. Step 3: Cross multiply
    149,040.48x = 205,585.92 × 91,689.60
  4. Step 4: Simplify right side
    149,040.48x = 18,850,090,770.43
  5. Step 5: Solve for x
    x = 18,850,090,770.43/149,040.48
  6. Step 6: Final answer
    x = 126,476.32

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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.