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Finding the Fourth Proportional to 101,142.40, 151,713.60 and 65,660.80

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Solution

The fourth proportional to 101,142.40, 151,713.60 and 65,660.80 is: 98,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,142.40 : 151,713.60 = 65,660.80 : x
  2. Step 2: Convert to fraction form
    101,142.40/151,713.60 = 65,660.80/x
  3. Step 3: Cross multiply
    101,142.40x = 151,713.60 × 65,660.80
  4. Step 4: Simplify right side
    101,142.40x = 9,961,636,346.88
  5. Step 5: Solve for x
    x = 9,961,636,346.88/101,142.40
  6. Step 6: Final answer
    x = 98,491.20

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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.