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Finding the Fourth Proportional to 68,147.40, 102,221.10 and 65,085.60

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Solution

The fourth proportional to 68,147.40, 102,221.10 and 65,085.60 is: 97,628.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,147.40 : 102,221.10 = 65,085.60 : x
  2. Step 2: Convert to fraction form
    68,147.40/102,221.10 = 65,085.60/x
  3. Step 3: Cross multiply
    68,147.40x = 102,221.10 × 65,085.60
  4. Step 4: Simplify right side
    68,147.40x = 6,653,121,626.16
  5. Step 5: Solve for x
    x = 6,653,121,626.16/68,147.40
  6. Step 6: Final answer
    x = 97,628.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.