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Finding the Fourth Proportional to 73,151.80, 109,596.46 and 69,215.20

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Solution

The fourth proportional to 73,151.80, 109,596.46 and 69,215.20 is: 103,698.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,151.80 : 109,596.46 = 69,215.20 : x
  2. Step 2: Convert to fraction form
    73,151.80/109,596.46 = 69,215.20/x
  3. Step 3: Cross multiply
    73,151.80x = 109,596.46 × 69,215.20
  4. Step 4: Simplify right side
    73,151.80x = 7,585,740,898.19
  5. Step 5: Solve for x
    x = 7,585,740,898.19/73,151.80
  6. Step 6: Final answer
    x = 103,698.62

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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.