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Finding the Fourth Proportional to 125,271.72, 172,882.98 and 82,755.72

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Solution

The fourth proportional to 125,271.72, 172,882.98 and 82,755.72 is: 114,208.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,271.72 : 172,882.98 = 82,755.72 : x
  2. Step 2: Convert to fraction form
    125,271.72/172,882.98 = 82,755.72/x
  3. Step 3: Cross multiply
    125,271.72x = 172,882.98 × 82,755.72
  4. Step 4: Simplify right side
    125,271.72x = 14,307,055,485.65
  5. Step 5: Solve for x
    x = 14,307,055,485.65/125,271.72
  6. Step 6: Final answer
    x = 114,208.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.