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Finding the Fourth Proportional to 123,576.32, 170,469.54 and 75,192.99

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Solution

The fourth proportional to 123,576.32, 170,469.54 and 75,192.99 is: 103,726.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,576.32 : 170,469.54 = 75,192.99 : x
  2. Step 2: Convert to fraction form
    123,576.32/170,469.54 = 75,192.99/x
  3. Step 3: Cross multiply
    123,576.32x = 170,469.54 × 75,192.99
  4. Step 4: Simplify right side
    123,576.32x = 12,818,114,416.52
  5. Step 5: Solve for x
    x = 12,818,114,416.52/123,576.32
  6. Step 6: Final answer
    x = 103,726.30

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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.