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Finding the Fourth Proportional to 120,306.44, 165,984.72 and 69,995.72

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Solution

The fourth proportional to 120,306.44, 165,984.72 and 69,995.72 is: 96,571.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,306.44 : 165,984.72 = 69,995.72 : x
  2. Step 2: Convert to fraction form
    120,306.44/165,984.72 = 69,995.72/x
  3. Step 3: Cross multiply
    120,306.44x = 165,984.72 × 69,995.72
  4. Step 4: Simplify right side
    120,306.44x = 11,618,219,985.40
  5. Step 5: Solve for x
    x = 11,618,219,985.40/120,306.44
  6. Step 6: Final answer
    x = 96,571.89

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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.