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Finding the Fourth Proportional to 101,321.28, 151,968.96 and 42,145.92

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Solution

The fourth proportional to 101,321.28, 151,968.96 and 42,145.92 is: 63,213.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,321.28 : 151,968.96 = 42,145.92 : x
  2. Step 2: Convert to fraction form
    101,321.28/151,968.96 = 42,145.92/x
  3. Step 3: Cross multiply
    101,321.28x = 151,968.96 × 42,145.92
  4. Step 4: Simplify right side
    101,321.28x = 6,404,871,630.64
  5. Step 5: Solve for x
    x = 6,404,871,630.64/101,321.28
  6. Step 6: Final answer
    x = 63,213.49

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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.