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Finding the Fourth Proportional to 100,615.97, 150,710.71 and 68,877.13

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Solution

The fourth proportional to 100,615.97, 150,710.71 and 68,877.13 is: 103,169.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,615.97 : 150,710.71 = 68,877.13 : x
  2. Step 2: Convert to fraction form
    100,615.97/150,710.71 = 68,877.13/x
  3. Step 3: Cross multiply
    100,615.97x = 150,710.71 × 68,877.13
  4. Step 4: Simplify right side
    100,615.97x = 10,380,521,165.06
  5. Step 5: Solve for x
    x = 10,380,521,165.06/100,615.97
  6. Step 6: Final answer
    x = 103,169.72

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1.5x scale

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.