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Finding the Fourth Proportional to 126,302.94, 189,320.94 and 42,040.62

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Solution

The fourth proportional to 126,302.94, 189,320.94 and 42,040.62 is: 63,016.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,302.94 : 189,320.94 = 42,040.62 : x
  2. Step 2: Convert to fraction form
    126,302.94/189,320.94 = 42,040.62/x
  3. Step 3: Cross multiply
    126,302.94x = 189,320.94 × 42,040.62
  4. Step 4: Simplify right side
    126,302.94x = 7,959,169,696.58
  5. Step 5: Solve for x
    x = 7,959,169,696.58/126,302.94
  6. Step 6: Final answer
    x = 63,016.50

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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.