Home / 125,981.51-173,853-68,620.66

Finding the Fourth Proportional to 125,981.51, 173,853 and 68,620.66

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Solution

The fourth proportional to 125,981.51, 173,853 and 68,620.66 is: 94,695.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,981.51 : 173,853 = 68,620.66 : x
  2. Step 2: Convert to fraction form
    125,981.51/173,853 = 68,620.66/x
  3. Step 3: Cross multiply
    125,981.51x = 173,853 × 68,620.66
  4. Step 4: Simplify right side
    125,981.51x = 11,929,906,842.37
  5. Step 5: Solve for x
    x = 11,929,906,842.37/125,981.51
  6. Step 6: Final answer
    x = 94,695.69

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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.