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Finding the Fourth Proportional to 127,484.71, 191,140.79 and 71,363.57

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Solution

The fourth proportional to 127,484.71, 191,140.79 and 71,363.57 is: 106,997.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,484.71 : 191,140.79 = 71,363.57 : x
  2. Step 2: Convert to fraction form
    127,484.71/191,140.79 = 71,363.57/x
  3. Step 3: Cross multiply
    127,484.71x = 191,140.79 × 71,363.57
  4. Step 4: Simplify right side
    127,484.71x = 13,640,487,834.50
  5. Step 5: Solve for x
    x = 13,640,487,834.50/127,484.71
  6. Step 6: Final answer
    x = 106,997.05

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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.