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Finding the Fourth Proportional to 126,737.70, 190,106.55 and 84,747.30

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Solution

The fourth proportional to 126,737.70, 190,106.55 and 84,747.30 is: 127,120.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,737.70 : 190,106.55 = 84,747.30 : x
  2. Step 2: Convert to fraction form
    126,737.70/190,106.55 = 84,747.30/x
  3. Step 3: Cross multiply
    126,737.70x = 190,106.55 × 84,747.30
  4. Step 4: Simplify right side
    126,737.70x = 16,111,016,824.82
  5. Step 5: Solve for x
    x = 16,111,016,824.82/126,737.70
  6. Step 6: Final answer
    x = 127,120.95

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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.