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Finding the Fourth Proportional to 123,007.92, 169,778.52 and 80,541.72

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Solution

The fourth proportional to 123,007.92, 169,778.52 and 80,541.72 is: 111,165.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,007.92 : 169,778.52 = 80,541.72 : x
  2. Step 2: Convert to fraction form
    123,007.92/169,778.52 = 80,541.72/x
  3. Step 3: Cross multiply
    123,007.92x = 169,778.52 × 80,541.72
  4. Step 4: Simplify right side
    123,007.92x = 13,674,254,019.85
  5. Step 5: Solve for x
    x = 13,674,254,019.85/123,007.92
  6. Step 6: Final answer
    x = 111,165.64

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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.