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Finding the Fourth Proportional to 80,732.79, 121,857.48 and 80,732.79

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Solution

The fourth proportional to 80,732.79, 121,857.48 and 80,732.79 is: 121,857.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,732.79 : 121,857.48 = 80,732.79 : x
  2. Step 2: Convert to fraction form
    80,732.79/121,857.48 = 80,732.79/x
  3. Step 3: Cross multiply
    80,732.79x = 121,857.48 × 80,732.79
  4. Step 4: Simplify right side
    80,732.79x = 9,837,894,342.77
  5. Step 5: Solve for x
    x = 9,837,894,342.77/80,732.79
  6. Step 6: Final answer
    x = 121,857.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.