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Finding the Fourth Proportional to 172,607.85, 258,937.29 and 88,415.64

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Solution

The fourth proportional to 172,607.85, 258,937.29 and 88,415.64 is: 132,636.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,607.85 : 258,937.29 = 88,415.64 : x
  2. Step 2: Convert to fraction form
    172,607.85/258,937.29 = 88,415.64/x
  3. Step 3: Cross multiply
    172,607.85x = 258,937.29 × 88,415.64
  4. Step 4: Simplify right side
    172,607.85x = 22,894,106,215.22
  5. Step 5: Solve for x
    x = 22,894,106,215.22/172,607.85
  6. Step 6: Final answer
    x = 132,636.53

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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.