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Finding the Fourth Proportional to 111,859.20, 167,788.80 and 107,558.40

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Solution

The fourth proportional to 111,859.20, 167,788.80 and 107,558.40 is: 161,337.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,859.20 : 167,788.80 = 107,558.40 : x
  2. Step 2: Convert to fraction form
    111,859.20/167,788.80 = 107,558.40/x
  3. Step 3: Cross multiply
    111,859.20x = 167,788.80 × 107,558.40
  4. Step 4: Simplify right side
    111,859.20x = 18,047,094,865.92
  5. Step 5: Solve for x
    x = 18,047,094,865.92/111,859.20
  6. Step 6: Final answer
    x = 161,337.60

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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.