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Finding the Fourth Proportional to 89,896.40, 134,844.60 and 79,528.40

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Solution

The fourth proportional to 89,896.40, 134,844.60 and 79,528.40 is: 119,292.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,896.40 : 134,844.60 = 79,528.40 : x
  2. Step 2: Convert to fraction form
    89,896.40/134,844.60 = 79,528.40/x
  3. Step 3: Cross multiply
    89,896.40x = 134,844.60 × 79,528.40
  4. Step 4: Simplify right side
    89,896.40x = 10,723,975,286.64
  5. Step 5: Solve for x
    x = 10,723,975,286.64/89,896.40
  6. Step 6: Final answer
    x = 119,292.60

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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.