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Finding the Fourth Proportional to 121,774.76, 182,662.17 and 79,690.28

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Solution

The fourth proportional to 121,774.76, 182,662.17 and 79,690.28 is: 119,535.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,774.76 : 182,662.17 = 79,690.28 : x
  2. Step 2: Convert to fraction form
    121,774.76/182,662.17 = 79,690.28/x
  3. Step 3: Cross multiply
    121,774.76x = 182,662.17 × 79,690.28
  4. Step 4: Simplify right side
    121,774.76x = 14,556,399,472.71
  5. Step 5: Solve for x
    x = 14,556,399,472.71/121,774.76
  6. Step 6: Final answer
    x = 119,535.44

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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.