Home / 108,578.17-149,867.82-76,319.92

Finding the Fourth Proportional to 108,578.17, 149,867.82 and 76,319.92

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Solution

The fourth proportional to 108,578.17, 149,867.82 and 76,319.92 is: 105,342.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,578.17 : 149,867.82 = 76,319.92 : x
  2. Step 2: Convert to fraction form
    108,578.17/149,867.82 = 76,319.92/x
  3. Step 3: Cross multiply
    108,578.17x = 149,867.82 × 76,319.92
  4. Step 4: Simplify right side
    108,578.17x = 11,437,900,220.31
  5. Step 5: Solve for x
    x = 11,437,900,220.31/108,578.17
  6. Step 6: Final answer
    x = 105,342.54

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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.