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Finding the Fourth Proportional to 192,641.72, 288,890.76 and 66,246.24

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Solution

The fourth proportional to 192,641.72, 288,890.76 and 66,246.24 is: 99,344.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,641.72 : 288,890.76 = 66,246.24 : x
  2. Step 2: Convert to fraction form
    192,641.72/288,890.76 = 66,246.24/x
  3. Step 3: Cross multiply
    192,641.72x = 288,890.76 × 66,246.24
  4. Step 4: Simplify right side
    192,641.72x = 19,137,926,620.74
  5. Step 5: Solve for x
    x = 19,137,926,620.74/192,641.72
  6. Step 6: Final answer
    x = 99,344.66

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1.5x scale

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.