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Finding the Fourth Proportional to 125,314.39, 172,934.09 and 68,726.17

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Solution

The fourth proportional to 125,314.39, 172,934.09 and 68,726.17 is: 94,842.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,314.39 : 172,934.09 = 68,726.17 : x
  2. Step 2: Convert to fraction form
    125,314.39/172,934.09 = 68,726.17/x
  3. Step 3: Cross multiply
    125,314.39x = 172,934.09 × 68,726.17
  4. Step 4: Simplify right side
    125,314.39x = 11,885,097,668.14
  5. Step 5: Solve for x
    x = 11,885,097,668.14/125,314.39
  6. Step 6: Final answer
    x = 94,842.24

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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.