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Finding the Fourth Proportional to 127,605.87, 191,267.85 and 52,684.71

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Solution

The fourth proportional to 127,605.87, 191,267.85 and 52,684.71 is: 78,968.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,605.87 : 191,267.85 = 52,684.71 : x
  2. Step 2: Convert to fraction form
    127,605.87/191,267.85 = 52,684.71/x
  3. Step 3: Cross multiply
    127,605.87x = 191,267.85 × 52,684.71
  4. Step 4: Simplify right side
    127,605.87x = 10,076,891,209.57
  5. Step 5: Solve for x
    x = 10,076,891,209.57/127,605.87
  6. Step 6: Final answer
    x = 78,968.87

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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.