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Finding the Fourth Proportional to 120,759.64, 166,590.40 and 84,969.40

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Solution

The fourth proportional to 120,759.64, 166,590.40 and 84,969.40 is: 117,217.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,759.64 : 166,590.40 = 84,969.40 : x
  2. Step 2: Convert to fraction form
    120,759.64/166,590.40 = 84,969.40/x
  3. Step 3: Cross multiply
    120,759.64x = 166,590.40 × 84,969.40
  4. Step 4: Simplify right side
    120,759.64x = 14,155,086,333.76
  5. Step 5: Solve for x
    x = 14,155,086,333.76/120,759.64
  6. Step 6: Final answer
    x = 117,217.03

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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.