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Finding the Fourth Proportional to 120,765.43, 166,656.65 and 67,050.57

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Solution

The fourth proportional to 120,765.43, 166,656.65 and 67,050.57 is: 92,529.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,765.43 : 166,656.65 = 67,050.57 : x
  2. Step 2: Convert to fraction form
    120,765.43/166,656.65 = 67,050.57/x
  3. Step 3: Cross multiply
    120,765.43x = 166,656.65 × 67,050.57
  4. Step 4: Simplify right side
    120,765.43x = 11,174,423,041.54
  5. Step 5: Solve for x
    x = 11,174,423,041.54/120,765.43
  6. Step 6: Final answer
    x = 92,529.98

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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.