Home / 115,743.88-159,672.61-74,921.18

Finding the Fourth Proportional to 115,743.88, 159,672.61 and 74,921.18

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Solution

The fourth proportional to 115,743.88, 159,672.61 and 74,921.18 is: 103,356.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,743.88 : 159,672.61 = 74,921.18 : x
  2. Step 2: Convert to fraction form
    115,743.88/159,672.61 = 74,921.18/x
  3. Step 3: Cross multiply
    115,743.88x = 159,672.61 × 74,921.18
  4. Step 4: Simplify right side
    115,743.88x = 11,962,860,354.88
  5. Step 5: Solve for x
    x = 11,962,860,354.88/115,743.88
  6. Step 6: Final answer
    x = 103,356.31

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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.