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Finding the Fourth Proportional to 125,176.50, 172,743.67 and 68,587.87

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Solution

The fourth proportional to 125,176.50, 172,743.67 and 68,587.87 is: 94,651.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,176.50 : 172,743.67 = 68,587.87 : x
  2. Step 2: Convert to fraction form
    125,176.50/172,743.67 = 68,587.87/x
  3. Step 3: Cross multiply
    125,176.50x = 172,743.67 × 68,587.87
  4. Step 4: Simplify right side
    125,176.50x = 11,848,120,381.28
  5. Step 5: Solve for x
    x = 11,848,120,381.28/125,176.50
  6. Step 6: Final answer
    x = 94,651.32

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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.