Home / 108,078.12-149,121.54-63,357.48

Finding the Fourth Proportional to 108,078.12, 149,121.54 and 63,357.48

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Solution

The fourth proportional to 108,078.12, 149,121.54 and 63,357.48 is: 87,417.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,078.12 : 149,121.54 = 63,357.48 : x
  2. Step 2: Convert to fraction form
    108,078.12/149,121.54 = 63,357.48/x
  3. Step 3: Cross multiply
    108,078.12x = 149,121.54 × 63,357.48
  4. Step 4: Simplify right side
    108,078.12x = 9,447,964,988.12
  5. Step 5: Solve for x
    x = 9,447,964,988.12/108,078.12
  6. Step 6: Final answer
    x = 87,417.92

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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.