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Finding the Fourth Proportional to 166,987, 230,442.60 and 90,507.34

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Solution

The fourth proportional to 166,987, 230,442.60 and 90,507.34 is: 124,900.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,987 : 230,442.60 = 90,507.34 : x
  2. Step 2: Convert to fraction form
    166,987/230,442.60 = 90,507.34/x
  3. Step 3: Cross multiply
    166,987x = 230,442.60 × 90,507.34
  4. Step 4: Simplify right side
    166,987x = 20,856,746,748.68
  5. Step 5: Solve for x
    x = 20,856,746,748.68/166,987
  6. Step 6: Final answer
    x = 124,900.42

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1.5x scale

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.