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Finding the Fourth Proportional to 146,130.28, 201,663 and 80,718.96

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Solution

The fourth proportional to 146,130.28, 201,663 and 80,718.96 is: 111,393.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,130.28 : 201,663 = 80,718.96 : x
  2. Step 2: Convert to fraction form
    146,130.28/201,663 = 80,718.96/x
  3. Step 3: Cross multiply
    146,130.28x = 201,663 × 80,718.96
  4. Step 4: Simplify right side
    146,130.28x = 16,278,027,630.48
  5. Step 5: Solve for x
    x = 16,278,027,630.48/146,130.28
  6. Step 6: Final answer
    x = 111,393.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.