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Finding the Fourth Proportional to 111,811.60, 167,717.40 and 100,752.40

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Solution

The fourth proportional to 111,811.60, 167,717.40 and 100,752.40 is: 151,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,811.60 : 167,717.40 = 100,752.40 : x
  2. Step 2: Convert to fraction form
    111,811.60/167,717.40 = 100,752.40/x
  3. Step 3: Cross multiply
    111,811.60x = 167,717.40 × 100,752.40
  4. Step 4: Simplify right side
    111,811.60x = 16,897,930,571.76
  5. Step 5: Solve for x
    x = 16,897,930,571.76/111,811.60
  6. Step 6: Final answer
    x = 151,128.60

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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.