Home / 103,956.30-155,545.20-74,039.70

Finding the Fourth Proportional to 103,956.30, 155,545.20 and 74,039.70

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Solution

The fourth proportional to 103,956.30, 155,545.20 and 74,039.70 is: 110,782.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,956.30 : 155,545.20 = 74,039.70 : x
  2. Step 2: Convert to fraction form
    103,956.30/155,545.20 = 74,039.70/x
  3. Step 3: Cross multiply
    103,956.30x = 155,545.20 × 74,039.70
  4. Step 4: Simplify right side
    103,956.30x = 11,516,519,944.44
  5. Step 5: Solve for x
    x = 11,516,519,944.44/103,956.30
  6. Step 6: Final answer
    x = 110,782.32

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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.