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Finding the Fourth Proportional to 111,000.60, 166,500.90 and 40,870.80

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Solution

The fourth proportional to 111,000.60, 166,500.90 and 40,870.80 is: 61,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,000.60 : 166,500.90 = 40,870.80 : x
  2. Step 2: Convert to fraction form
    111,000.60/166,500.90 = 40,870.80/x
  3. Step 3: Cross multiply
    111,000.60x = 166,500.90 × 40,870.80
  4. Step 4: Simplify right side
    111,000.60x = 6,805,024,983.72
  5. Step 5: Solve for x
    x = 6,805,024,983.72/111,000.60
  6. Step 6: Final answer
    x = 61,306.20

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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.