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Finding the Fourth Proportional to 166,768.78, 230,140.98 and 90,287.87

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Solution

The fourth proportional to 166,768.78, 230,140.98 and 90,287.87 is: 124,597.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,768.78 : 230,140.98 = 90,287.87 : x
  2. Step 2: Convert to fraction form
    166,768.78/230,140.98 = 90,287.87/x
  3. Step 3: Cross multiply
    166,768.78x = 230,140.98 × 90,287.87
  4. Step 4: Simplify right side
    166,768.78x = 20,778,938,934.82
  5. Step 5: Solve for x
    x = 20,778,938,934.82/166,768.78
  6. Step 6: Final answer
    x = 124,597.30

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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.