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Finding the Fourth Proportional to 125,083.61, 172,613.31 and 67,722.48

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Solution

The fourth proportional to 125,083.61, 172,613.31 and 67,722.48 is: 93,455.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,083.61 : 172,613.31 = 67,722.48 : x
  2. Step 2: Convert to fraction form
    125,083.61/172,613.31 = 67,722.48/x
  3. Step 3: Cross multiply
    125,083.61x = 172,613.31 × 67,722.48
  4. Step 4: Simplify right side
    125,083.61x = 11,689,800,571.14
  5. Step 5: Solve for x
    x = 11,689,800,571.14/125,083.61
  6. Step 6: Final answer
    x = 93,455.89

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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.