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Finding the Fourth Proportional to 133,066.90, 199,600.35 and 131,317.30

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Solution

The fourth proportional to 133,066.90, 199,600.35 and 131,317.30 is: 196,975.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,066.90 : 199,600.35 = 131,317.30 : x
  2. Step 2: Convert to fraction form
    133,066.90/199,600.35 = 131,317.30/x
  3. Step 3: Cross multiply
    133,066.90x = 199,600.35 × 131,317.30
  4. Step 4: Simplify right side
    133,066.90x = 26,210,979,041.06
  5. Step 5: Solve for x
    x = 26,210,979,041.06/133,066.90
  6. Step 6: Final answer
    x = 196,975.95

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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.