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Finding the Fourth Proportional to 96,286.40, 144,429.60 and 86,609.60

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Solution

The fourth proportional to 96,286.40, 144,429.60 and 86,609.60 is: 129,914.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,286.40 : 144,429.60 = 86,609.60 : x
  2. Step 2: Convert to fraction form
    96,286.40/144,429.60 = 86,609.60/x
  3. Step 3: Cross multiply
    96,286.40x = 144,429.60 × 86,609.60
  4. Step 4: Simplify right side
    96,286.40x = 12,508,989,884.16
  5. Step 5: Solve for x
    x = 12,508,989,884.16/96,286.40
  6. Step 6: Final answer
    x = 129,914.40

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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.