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Finding the Fourth Proportional to 119,908.80, 165,485.92 and 69,604.80

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Solution

The fourth proportional to 119,908.80, 165,485.92 and 69,604.80 is: 96,061.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,908.80 : 165,485.92 = 69,604.80 : x
  2. Step 2: Convert to fraction form
    119,908.80/165,485.92 = 69,604.80/x
  3. Step 3: Cross multiply
    119,908.80x = 165,485.92 × 69,604.80
  4. Step 4: Simplify right side
    119,908.80x = 11,518,614,364.42
  5. Step 5: Solve for x
    x = 11,518,614,364.42/119,908.80
  6. Step 6: Final answer
    x = 96,061.46

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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.