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Finding the Fourth Proportional to 67,189.16, 100,770.30 and 63,858.60

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Solution

The fourth proportional to 67,189.16, 100,770.30 and 63,858.60 is: 95,775.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,189.16 : 100,770.30 = 63,858.60 : x
  2. Step 2: Convert to fraction form
    67,189.16/100,770.30 = 63,858.60/x
  3. Step 3: Cross multiply
    67,189.16x = 100,770.30 × 63,858.60
  4. Step 4: Simplify right side
    67,189.16x = 6,435,050,279.58
  5. Step 5: Solve for x
    x = 6,435,050,279.58/67,189.16
  6. Step 6: Final answer
    x = 95,775.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.