Home / 103,934.30-155,512.20-74,017.70

Finding the Fourth Proportional to 103,934.30, 155,512.20 and 74,017.70

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Solution

The fourth proportional to 103,934.30, 155,512.20 and 74,017.70 is: 110,749.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,934.30 : 155,512.20 = 74,017.70 : x
  2. Step 2: Convert to fraction form
    103,934.30/155,512.20 = 74,017.70/x
  3. Step 3: Cross multiply
    103,934.30x = 155,512.20 × 74,017.70
  4. Step 4: Simplify right side
    103,934.30x = 11,510,655,365.94
  5. Step 5: Solve for x
    x = 11,510,655,365.94/103,934.30
  6. Step 6: Final answer
    x = 110,749.34

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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.