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Finding the Fourth Proportional to 100,900.40, 151,242.60 and 34,278.80

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Solution

The fourth proportional to 100,900.40, 151,242.60 and 34,278.80 is: 51,381.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,900.40 : 151,242.60 = 34,278.80 : x
  2. Step 2: Convert to fraction form
    100,900.40/151,242.60 = 34,278.80/x
  3. Step 3: Cross multiply
    100,900.40x = 151,242.60 × 34,278.80
  4. Step 4: Simplify right side
    100,900.40x = 5,184,414,836.88
  5. Step 5: Solve for x
    x = 5,184,414,836.88/100,900.40
  6. Step 6: Final answer
    x = 51,381.51

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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.