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Finding the Fourth Proportional to 102,159.49, 140,999.51 and 63,936.80

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Solution

The fourth proportional to 102,159.49, 140,999.51 and 63,936.80 is: 88,244.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,159.49 : 140,999.51 = 63,936.80 : x
  2. Step 2: Convert to fraction form
    102,159.49/140,999.51 = 63,936.80/x
  3. Step 3: Cross multiply
    102,159.49x = 140,999.51 × 63,936.80
  4. Step 4: Simplify right side
    102,159.49x = 9,015,057,470.97
  5. Step 5: Solve for x
    x = 9,015,057,470.97/102,159.49
  6. Step 6: Final answer
    x = 88,244.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.