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Finding the Fourth Proportional to 120,868.80, 166,822.80 and 77,233.44

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Solution

The fourth proportional to 120,868.80, 166,822.80 and 77,233.44 is: 106,597.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,868.80 : 166,822.80 = 77,233.44 : x
  2. Step 2: Convert to fraction form
    120,868.80/166,822.80 = 77,233.44/x
  3. Step 3: Cross multiply
    120,868.80x = 166,822.80 × 77,233.44
  4. Step 4: Simplify right side
    120,868.80x = 12,884,298,714.43
  5. Step 5: Solve for x
    x = 12,884,298,714.43/120,868.80
  6. Step 6: Final answer
    x = 106,597.39

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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.