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Finding the Fourth Proportional to 172,784.28, 259,168.38 and 60,489.69

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Solution

The fourth proportional to 172,784.28, 259,168.38 and 60,489.69 is: 90,731.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,784.28 : 259,168.38 = 60,489.69 : x
  2. Step 2: Convert to fraction form
    172,784.28/259,168.38 = 60,489.69/x
  3. Step 3: Cross multiply
    172,784.28x = 259,168.38 × 60,489.69
  4. Step 4: Simplify right side
    172,784.28x = 15,677,014,275.67
  5. Step 5: Solve for x
    x = 15,677,014,275.67/172,784.28
  6. Step 6: Final answer
    x = 90,731.72

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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.