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Finding the Fourth Proportional to 133,066.63, 183,662.79 and 87,752.80

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Solution

The fourth proportional to 133,066.63, 183,662.79 and 87,752.80 is: 121,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,066.63 : 183,662.79 = 87,752.80 : x
  2. Step 2: Convert to fraction form
    133,066.63/183,662.79 = 87,752.80/x
  3. Step 3: Cross multiply
    133,066.63x = 183,662.79 × 87,752.80
  4. Step 4: Simplify right side
    133,066.63x = 16,116,923,160.00
  5. Step 5: Solve for x
    x = 16,116,923,160.00/133,066.63
  6. Step 6: Final answer
    x = 121,119.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.