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Finding the Fourth Proportional to 104,420.60, 156,630.90 and 100,338.20

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Solution

The fourth proportional to 104,420.60, 156,630.90 and 100,338.20 is: 150,507.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,420.60 : 156,630.90 = 100,338.20 : x
  2. Step 2: Convert to fraction form
    104,420.60/156,630.90 = 100,338.20/x
  3. Step 3: Cross multiply
    104,420.60x = 156,630.90 × 100,338.20
  4. Step 4: Simplify right side
    104,420.60x = 15,716,062,570.38
  5. Step 5: Solve for x
    x = 15,716,062,570.38/104,420.60
  6. Step 6: Final answer
    x = 150,507.30

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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.