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Finding the Fourth Proportional to 172,291.56, 258,597.26 and 88,111.88

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Solution

The fourth proportional to 172,291.56, 258,597.26 and 88,111.88 is: 132,249.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,291.56 : 258,597.26 = 88,111.88 : x
  2. Step 2: Convert to fraction form
    172,291.56/258,597.26 = 88,111.88/x
  3. Step 3: Cross multiply
    172,291.56x = 258,597.26 × 88,111.88
  4. Step 4: Simplify right side
    172,291.56x = 22,785,490,741.45
  5. Step 5: Solve for x
    x = 22,785,490,741.45/172,291.56
  6. Step 6: Final answer
    x = 132,249.60

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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.