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Finding the Fourth Proportional to 111,213.10, 166,819.65 and 103,437.10

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Solution

The fourth proportional to 111,213.10, 166,819.65 and 103,437.10 is: 155,155.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,213.10 : 166,819.65 = 103,437.10 : x
  2. Step 2: Convert to fraction form
    111,213.10/166,819.65 = 103,437.10/x
  3. Step 3: Cross multiply
    111,213.10x = 166,819.65 × 103,437.10
  4. Step 4: Simplify right side
    111,213.10x = 17,255,340,819.02
  5. Step 5: Solve for x
    x = 17,255,340,819.02/111,213.10
  6. Step 6: Final answer
    x = 155,155.65

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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.