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Finding the Fourth Proportional to 125,340.34, 172,969.17 and 67,979.43

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Solution

The fourth proportional to 125,340.34, 172,969.17 and 67,979.43 is: 93,811.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,340.34 : 172,969.17 = 67,979.43 : x
  2. Step 2: Convert to fraction form
    125,340.34/172,969.17 = 67,979.43/x
  3. Step 3: Cross multiply
    125,340.34x = 172,969.17 × 67,979.43
  4. Step 4: Simplify right side
    125,340.34x = 11,758,344,794.98
  5. Step 5: Solve for x
    x = 11,758,344,794.98/125,340.34
  6. Step 6: Final answer
    x = 93,811.34

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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.