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Finding the Fourth Proportional to 172,324.49, 237,772.59 and 100,690.67

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Solution

The fourth proportional to 172,324.49, 237,772.59 and 100,690.67 is: 138,932.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,324.49 : 237,772.59 = 100,690.67 : x
  2. Step 2: Convert to fraction form
    172,324.49/237,772.59 = 100,690.67/x
  3. Step 3: Cross multiply
    172,324.49x = 237,772.59 × 100,690.67
  4. Step 4: Simplify right side
    172,324.49x = 23,941,480,719.93
  5. Step 5: Solve for x
    x = 23,941,480,719.93/172,324.49
  6. Step 6: Final answer
    x = 138,932.55

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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.