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Finding the Fourth Proportional to 125,965.36, 188,835 and 115,008.48

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Solution

The fourth proportional to 125,965.36, 188,835 and 115,008.48 is: 172,409.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,965.36 : 188,835 = 115,008.48 : x
  2. Step 2: Convert to fraction form
    125,965.36/188,835 = 115,008.48/x
  3. Step 3: Cross multiply
    125,965.36x = 188,835 × 115,008.48
  4. Step 4: Simplify right side
    125,965.36x = 21,717,626,320.80
  5. Step 5: Solve for x
    x = 21,717,626,320.80/125,965.36
  6. Step 6: Final answer
    x = 172,409.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.