Home / 103,133.28-142,273.24-67,306.72

Finding the Fourth Proportional to 103,133.28, 142,273.24 and 67,306.72

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Solution

The fourth proportional to 103,133.28, 142,273.24 and 67,306.72 is: 92,850.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,133.28 : 142,273.24 = 67,306.72 : x
  2. Step 2: Convert to fraction form
    103,133.28/142,273.24 = 67,306.72/x
  3. Step 3: Cross multiply
    103,133.28x = 142,273.24 × 67,306.72
  4. Step 4: Simplify right side
    103,133.28x = 9,575,945,128.17
  5. Step 5: Solve for x
    x = 9,575,945,128.17/103,133.28
  6. Step 6: Final answer
    x = 92,850.19

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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.