Home / 102,207.02-140,965.64-66,408.66

Finding the Fourth Proportional to 102,207.02, 140,965.64 and 66,408.66

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Solution

The fourth proportional to 102,207.02, 140,965.64 and 66,408.66 is: 91,591.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,207.02 : 140,965.64 = 66,408.66 : x
  2. Step 2: Convert to fraction form
    102,207.02/140,965.64 = 66,408.66/x
  3. Step 3: Cross multiply
    102,207.02x = 140,965.64 × 66,408.66
  4. Step 4: Simplify right side
    102,207.02x = 9,361,339,258.44
  5. Step 5: Solve for x
    x = 9,361,339,258.44/102,207.02
  6. Step 6: Final answer
    x = 91,591.94

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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.