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Finding the Fourth Proportional to 128,026.42, 176,650.09 and 73,568.07

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Solution

The fourth proportional to 128,026.42, 176,650.09 and 73,568.07 is: 101,508.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,026.42 : 176,650.09 = 73,568.07 : x
  2. Step 2: Convert to fraction form
    128,026.42/176,650.09 = 73,568.07/x
  3. Step 3: Cross multiply
    128,026.42x = 176,650.09 × 73,568.07
  4. Step 4: Simplify right side
    128,026.42x = 12,995,806,002.71
  5. Step 5: Solve for x
    x = 12,995,806,002.71/128,026.42
  6. Step 6: Final answer
    x = 101,508.78

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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.