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Finding the Fourth Proportional to 133,507.20, 199,969.20 and 103,691.10

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Solution

The fourth proportional to 133,507.20, 199,969.20 and 103,691.10 is: 155,310.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,507.20 : 199,969.20 = 103,691.10 : x
  2. Step 2: Convert to fraction form
    133,507.20/199,969.20 = 103,691.10/x
  3. Step 3: Cross multiply
    133,507.20x = 199,969.20 × 103,691.10
  4. Step 4: Simplify right side
    133,507.20x = 20,735,026,314.12
  5. Step 5: Solve for x
    x = 20,735,026,314.12/133,507.20
  6. Step 6: Final answer
    x = 155,310.17

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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.