Home / 108,439.97-149,647.91-63,144.36

Finding the Fourth Proportional to 108,439.97, 149,647.91 and 63,144.36

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Solution

The fourth proportional to 108,439.97, 149,647.91 and 63,144.36 is: 87,139.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,439.97 : 149,647.91 = 63,144.36 : x
  2. Step 2: Convert to fraction form
    108,439.97/149,647.91 = 63,144.36/x
  3. Step 3: Cross multiply
    108,439.97x = 149,647.91 × 63,144.36
  4. Step 4: Simplify right side
    108,439.97x = 9,449,421,186.57
  5. Step 5: Solve for x
    x = 9,449,421,186.57/108,439.97
  6. Step 6: Final answer
    x = 87,139.66

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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.