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Finding the Fourth Proportional to 127,800.70, 191,701.05 and 34,315.90

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Solution

The fourth proportional to 127,800.70, 191,701.05 and 34,315.90 is: 51,473.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,800.70 : 191,701.05 = 34,315.90 : x
  2. Step 2: Convert to fraction form
    127,800.70/191,701.05 = 34,315.90/x
  3. Step 3: Cross multiply
    127,800.70x = 191,701.05 × 34,315.90
  4. Step 4: Simplify right side
    127,800.70x = 6,578,394,061.70
  5. Step 5: Solve for x
    x = 6,578,394,061.70/127,800.70
  6. Step 6: Final answer
    x = 51,473.85

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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.