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Finding the Fourth Proportional to 133,009.40, 199,643.70 and 66,524.60

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Solution

The fourth proportional to 133,009.40, 199,643.70 and 66,524.60 is: 99,851.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,009.40 : 199,643.70 = 66,524.60 : x
  2. Step 2: Convert to fraction form
    133,009.40/199,643.70 = 66,524.60/x
  3. Step 3: Cross multiply
    133,009.40x = 199,643.70 × 66,524.60
  4. Step 4: Simplify right side
    133,009.40x = 13,281,217,285.02
  5. Step 5: Solve for x
    x = 13,281,217,285.02/133,009.40
  6. Step 6: Final answer
    x = 99,851.72

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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.