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Finding the Fourth Proportional to 166,881.60, 230,292.72 and 91,428.48

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Solution

The fourth proportional to 166,881.60, 230,292.72 and 91,428.48 is: 126,169.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,881.60 : 230,292.72 = 91,428.48 : x
  2. Step 2: Convert to fraction form
    166,881.60/230,292.72 = 91,428.48/x
  3. Step 3: Cross multiply
    166,881.60x = 230,292.72 × 91,428.48
  4. Step 4: Simplify right side
    166,881.60x = 21,055,313,344.67
  5. Step 5: Solve for x
    x = 21,055,313,344.67/166,881.60
  6. Step 6: Final answer
    x = 126,169.17

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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.