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Finding the Fourth Proportional to 82,148.56, 122,639.30 and 79,232.56

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Solution

The fourth proportional to 82,148.56, 122,639.30 and 79,232.56 is: 118,286.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,148.56 : 122,639.30 = 79,232.56 : x
  2. Step 2: Convert to fraction form
    82,148.56/122,639.30 = 79,232.56/x
  3. Step 3: Cross multiply
    82,148.56x = 122,639.30 × 79,232.56
  4. Step 4: Simplify right side
    82,148.56x = 9,717,025,695.61
  5. Step 5: Solve for x
    x = 9,717,025,695.61/82,148.56
  6. Step 6: Final answer
    x = 118,286.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.