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Finding the Fourth Proportional to 133,870.60, 200,699.34 and 66,355.12

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Solution

The fourth proportional to 133,870.60, 200,699.34 and 66,355.12 is: 99,479.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,870.60 : 200,699.34 = 66,355.12 : x
  2. Step 2: Convert to fraction form
    133,870.60/200,699.34 = 66,355.12/x
  3. Step 3: Cross multiply
    133,870.60x = 200,699.34 × 66,355.12
  4. Step 4: Simplify right side
    133,870.60x = 13,317,428,789.62
  5. Step 5: Solve for x
    x = 13,317,428,789.62/133,870.60
  6. Step 6: Final answer
    x = 99,479.86

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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.