Home / 102,720.46-141,772.83-66,466.54

Finding the Fourth Proportional to 102,720.46, 141,772.83 and 66,466.54

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Solution

The fourth proportional to 102,720.46, 141,772.83 and 66,466.54 is: 91,735.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,720.46 : 141,772.83 = 66,466.54 : x
  2. Step 2: Convert to fraction form
    102,720.46/141,772.83 = 66,466.54/x
  3. Step 3: Cross multiply
    102,720.46x = 141,772.83 × 66,466.54
  4. Step 4: Simplify right side
    102,720.46x = 9,423,149,476.11
  5. Step 5: Solve for x
    x = 9,423,149,476.11/102,720.46
  6. Step 6: Final answer
    x = 91,735.86

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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.