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Finding the Fourth Proportional to 120,967.92, 166,924.32 and 69,972.48

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Solution

The fourth proportional to 120,967.92, 166,924.32 and 69,972.48 is: 96,555.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,967.92 : 166,924.32 = 69,972.48 : x
  2. Step 2: Convert to fraction form
    120,967.92/166,924.32 = 69,972.48/x
  3. Step 3: Cross multiply
    120,967.92x = 166,924.32 × 69,972.48
  4. Step 4: Simplify right side
    120,967.92x = 11,680,108,642.71
  5. Step 5: Solve for x
    x = 11,680,108,642.71/120,967.92
  6. Step 6: Final answer
    x = 96,555.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.