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Finding the Fourth Proportional to 172,019.36, 257,756.88 and 132,672.80

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Solution

The fourth proportional to 172,019.36, 257,756.88 and 132,672.80 is: 198,799.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,019.36 : 257,756.88 = 132,672.80 : x
  2. Step 2: Convert to fraction form
    172,019.36/257,756.88 = 132,672.80/x
  3. Step 3: Cross multiply
    172,019.36x = 257,756.88 × 132,672.80
  4. Step 4: Simplify right side
    172,019.36x = 34,197,326,988.86
  5. Step 5: Solve for x
    x = 34,197,326,988.86/172,019.36
  6. Step 6: Final answer
    x = 198,799.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.