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Finding the Fourth Proportional to 125,117.36, 172,662 and 68,529.68

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Solution

The fourth proportional to 125,117.36, 172,662 and 68,529.68 is: 94,570.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,117.36 : 172,662 = 68,529.68 : x
  2. Step 2: Convert to fraction form
    125,117.36/172,662 = 68,529.68/x
  3. Step 3: Cross multiply
    125,117.36x = 172,662 × 68,529.68
  4. Step 4: Simplify right side
    125,117.36x = 11,832,471,608.16
  5. Step 5: Solve for x
    x = 11,832,471,608.16/125,117.36
  6. Step 6: Final answer
    x = 94,570.98

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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.