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Finding the Fourth Proportional to 84,765.62, 127,172.50 and 69,118.65

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Solution

The fourth proportional to 84,765.62, 127,172.50 and 69,118.65 is: 103,697.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,765.62 : 127,172.50 = 69,118.65 : x
  2. Step 2: Convert to fraction form
    84,765.62/127,172.50 = 69,118.65/x
  3. Step 3: Cross multiply
    84,765.62x = 127,172.50 × 69,118.65
  4. Step 4: Simplify right side
    84,765.62x = 8,789,991,344.33
  5. Step 5: Solve for x
    x = 8,789,991,344.33/84,765.62
  6. Step 6: Final answer
    x = 103,697.60

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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.