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Finding the Fourth Proportional to 192,695.76, 288,971.82 and 66,300.66

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Solution

The fourth proportional to 192,695.76, 288,971.82 and 66,300.66 is: 99,426.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,695.76 : 288,971.82 = 66,300.66 : x
  2. Step 2: Convert to fraction form
    192,695.76/288,971.82 = 66,300.66/x
  3. Step 3: Cross multiply
    192,695.76x = 288,971.82 × 66,300.66
  4. Step 4: Simplify right side
    192,695.76x = 19,159,022,387.40
  5. Step 5: Solve for x
    x = 19,159,022,387.40/192,695.76
  6. Step 6: Final answer
    x = 99,426.28

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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.