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Finding the Fourth Proportional to 172,158.88, 257,682.80 and 88,938.40

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Solution

The fourth proportional to 172,158.88, 257,682.80 and 88,938.40 is: 133,120.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,158.88 : 257,682.80 = 88,938.40 : x
  2. Step 2: Convert to fraction form
    172,158.88/257,682.80 = 88,938.40/x
  3. Step 3: Cross multiply
    172,158.88x = 257,682.80 × 88,938.40
  4. Step 4: Simplify right side
    172,158.88x = 22,917,895,939.52
  5. Step 5: Solve for x
    x = 22,917,895,939.52/172,158.88
  6. Step 6: Final answer
    x = 133,120.61

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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.