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Finding the Fourth Proportional to 111,482.60, 166,964.70 and 76,231.40

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Solution

The fourth proportional to 111,482.60, 166,964.70 and 76,231.40 is: 114,169.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,482.60 : 166,964.70 = 76,231.40 : x
  2. Step 2: Convert to fraction form
    111,482.60/166,964.70 = 76,231.40/x
  3. Step 3: Cross multiply
    111,482.60x = 166,964.70 × 76,231.40
  4. Step 4: Simplify right side
    111,482.60x = 12,727,952,831.58
  5. Step 5: Solve for x
    x = 12,727,952,831.58/111,482.60
  6. Step 6: Final answer
    x = 114,169.86

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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.