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Finding the Fourth Proportional to 126,073.92, 188,955.36 and 69,866.40

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Solution

The fourth proportional to 126,073.92, 188,955.36 and 69,866.40 is: 104,713.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,073.92 : 188,955.36 = 69,866.40 : x
  2. Step 2: Convert to fraction form
    126,073.92/188,955.36 = 69,866.40/x
  3. Step 3: Cross multiply
    126,073.92x = 188,955.36 × 69,866.40
  4. Step 4: Simplify right side
    126,073.92x = 13,201,630,763.90
  5. Step 5: Solve for x
    x = 13,201,630,763.90/126,073.92
  6. Step 6: Final answer
    x = 104,713.42

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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.