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Finding the Fourth Proportional to 172,063.80, 237,406.50 and 100,402.92

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Solution

The fourth proportional to 172,063.80, 237,406.50 and 100,402.92 is: 138,531.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,063.80 : 237,406.50 = 100,402.92 : x
  2. Step 2: Convert to fraction form
    172,063.80/237,406.50 = 100,402.92/x
  3. Step 3: Cross multiply
    172,063.80x = 237,406.50 × 100,402.92
  4. Step 4: Simplify right side
    172,063.80x = 23,836,305,826.98
  5. Step 5: Solve for x
    x = 23,836,305,826.98/172,063.80
  6. Step 6: Final answer
    x = 138,531.79

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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.