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Finding the Fourth Proportional to 125,879.72, 173,718.27 and 68,521.13

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Solution

The fourth proportional to 125,879.72, 173,718.27 and 68,521.13 is: 94,561.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,879.72 : 173,718.27 = 68,521.13 : x
  2. Step 2: Convert to fraction form
    125,879.72/173,718.27 = 68,521.13/x
  3. Step 3: Cross multiply
    125,879.72x = 173,718.27 × 68,521.13
  4. Step 4: Simplify right side
    125,879.72x = 11,903,371,944.90
  5. Step 5: Solve for x
    x = 11,903,371,944.90/125,879.72
  6. Step 6: Final answer
    x = 94,561.48

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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.