Home / 103,480.28-155,441.52-74,087

Finding the Fourth Proportional to 103,480.28, 155,441.52 and 74,087

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Solution

The fourth proportional to 103,480.28, 155,441.52 and 74,087 is: 111,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,480.28 : 155,441.52 = 74,087 : x
  2. Step 2: Convert to fraction form
    103,480.28/155,441.52 = 74,087/x
  3. Step 3: Cross multiply
    103,480.28x = 155,441.52 × 74,087
  4. Step 4: Simplify right side
    103,480.28x = 11,516,195,892.24
  5. Step 5: Solve for x
    x = 11,516,195,892.24/103,480.28
  6. Step 6: Final answer
    x = 111,288.80

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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.