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Finding the Fourth Proportional to 100,393.68, 150,777.72 and 88,390.07

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Solution

The fourth proportional to 100,393.68, 150,777.72 and 88,390.07 is: 132,749.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,393.68 : 150,777.72 = 88,390.07 : x
  2. Step 2: Convert to fraction form
    100,393.68/150,777.72 = 88,390.07/x
  3. Step 3: Cross multiply
    100,393.68x = 150,777.72 × 88,390.07
  4. Step 4: Simplify right side
    100,393.68x = 13,327,252,471.35
  5. Step 5: Solve for x
    x = 13,327,252,471.35/100,393.68
  6. Step 6: Final answer
    x = 132,749.91

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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.