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Finding the Fourth Proportional to 133,042.78, 183,597.62 and 72,612.93

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Solution

The fourth proportional to 133,042.78, 183,597.62 and 72,612.93 is: 100,205.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,042.78 : 183,597.62 = 72,612.93 : x
  2. Step 2: Convert to fraction form
    133,042.78/183,597.62 = 72,612.93/x
  3. Step 3: Cross multiply
    133,042.78x = 183,597.62 × 72,612.93
  4. Step 4: Simplify right side
    133,042.78x = 13,331,560,766.16
  5. Step 5: Solve for x
    x = 13,331,560,766.16/133,042.78
  6. Step 6: Final answer
    x = 100,205.07

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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.