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Finding the Fourth Proportional to 100,374.06, 150,610.23 and 70,980.78

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Solution

The fourth proportional to 100,374.06, 150,610.23 and 70,980.78 is: 106,505.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,374.06 : 150,610.23 = 70,980.78 : x
  2. Step 2: Convert to fraction form
    100,374.06/150,610.23 = 70,980.78/x
  3. Step 3: Cross multiply
    100,374.06x = 150,610.23 × 70,980.78
  4. Step 4: Simplify right side
    100,374.06x = 10,690,431,601.38
  5. Step 5: Solve for x
    x = 10,690,431,601.38/100,374.06
  6. Step 6: Final answer
    x = 106,505.92

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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.