Home / 103,804.20-155,706.24-74,279.70

Finding the Fourth Proportional to 103,804.20, 155,706.24 and 74,279.70

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Solution

The fourth proportional to 103,804.20, 155,706.24 and 74,279.70 is: 111,419.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,804.20 : 155,706.24 = 74,279.70 : x
  2. Step 2: Convert to fraction form
    103,804.20/155,706.24 = 74,279.70/x
  3. Step 3: Cross multiply
    103,804.20x = 155,706.24 × 74,279.70
  4. Step 4: Simplify right side
    103,804.20x = 11,565,812,795.33
  5. Step 5: Solve for x
    x = 11,565,812,795.33/103,804.20
  6. Step 6: Final answer
    x = 111,419.51

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1.5x scale

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.