Home / 126,862.30-189,904.65-74,115.10

Finding the Fourth Proportional to 126,862.30, 189,904.65 and 74,115.10

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Solution

The fourth proportional to 126,862.30, 189,904.65 and 74,115.10 is: 110,945.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,862.30 : 189,904.65 = 74,115.10 : x
  2. Step 2: Convert to fraction form
    126,862.30/189,904.65 = 74,115.10/x
  3. Step 3: Cross multiply
    126,862.30x = 189,904.65 × 74,115.10
  4. Step 4: Simplify right side
    126,862.30x = 14,074,802,125.22
  5. Step 5: Solve for x
    x = 14,074,802,125.22/126,862.30
  6. Step 6: Final answer
    x = 110,945.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.