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Finding the Fourth Proportional to 80,998.65, 121,497.98 and 80,998.65

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Solution

The fourth proportional to 80,998.65, 121,497.98 and 80,998.65 is: 121,497.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,998.65 : 121,497.98 = 80,998.65 : x
  2. Step 2: Convert to fraction form
    80,998.65/121,497.98 = 80,998.65/x
  3. Step 3: Cross multiply
    80,998.65x = 121,497.98 × 80,998.65
  4. Step 4: Simplify right side
    80,998.65x = 9,841,171,952.73
  5. Step 5: Solve for x
    x = 9,841,171,952.73/80,998.65
  6. Step 6: Final answer
    x = 121,497.98

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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.