Home / 103,963.20-156,017.70-66,614.10

Finding the Fourth Proportional to 103,963.20, 156,017.70 and 66,614.10

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Solution

The fourth proportional to 103,963.20, 156,017.70 and 66,614.10 is: 99,967.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,963.20 : 156,017.70 = 66,614.10 : x
  2. Step 2: Convert to fraction form
    103,963.20/156,017.70 = 66,614.10/x
  3. Step 3: Cross multiply
    103,963.20x = 156,017.70 × 66,614.10
  4. Step 4: Simplify right side
    103,963.20x = 10,392,978,669.57
  5. Step 5: Solve for x
    x = 10,392,978,669.57/103,963.20
  6. Step 6: Final answer
    x = 99,967.86

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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.