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Finding the Fourth Proportional to 133,388.48, 199,898.04 and 66,743.84

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Solution

The fourth proportional to 133,388.48, 199,898.04 and 66,743.84 is: 100,023.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,388.48 : 199,898.04 = 66,743.84 : x
  2. Step 2: Convert to fraction form
    133,388.48/199,898.04 = 66,743.84/x
  3. Step 3: Cross multiply
    133,388.48x = 199,898.04 × 66,743.84
  4. Step 4: Simplify right side
    133,388.48x = 13,341,962,798.07
  5. Step 5: Solve for x
    x = 13,341,962,798.07/133,388.48
  6. Step 6: Final answer
    x = 100,023.35

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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.