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Finding the Fourth Proportional to 125,218.65, 172,800.77 and 68,629.89

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Solution

The fourth proportional to 125,218.65, 172,800.77 and 68,629.89 is: 94,708.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,218.65 : 172,800.77 = 68,629.89 : x
  2. Step 2: Convert to fraction form
    125,218.65/172,800.77 = 68,629.89/x
  3. Step 3: Cross multiply
    125,218.65x = 172,800.77 × 68,629.89
  4. Step 4: Simplify right side
    125,218.65x = 11,859,297,493.87
  5. Step 5: Solve for x
    x = 11,859,297,493.87/125,218.65
  6. Step 6: Final answer
    x = 94,708.72

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1.5x scale

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.