Home / 126,407.63-189,626.03-42,178.97

Finding the Fourth Proportional to 126,407.63, 189,626.03 and 42,178.97

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Solution

The fourth proportional to 126,407.63, 189,626.03 and 42,178.97 is: 63,273.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,407.63 : 189,626.03 = 42,178.97 : x
  2. Step 2: Convert to fraction form
    126,407.63/189,626.03 = 42,178.97/x
  3. Step 3: Cross multiply
    126,407.63x = 189,626.03 × 42,178.97
  4. Step 4: Simplify right side
    126,407.63x = 7,998,231,210.10
  5. Step 5: Solve for x
    x = 7,998,231,210.10/126,407.63
  6. Step 6: Final answer
    x = 63,273.32

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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.