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Finding the Fourth Proportional to 89,296.40, 133,944.60 and 79,187.60

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Solution

The fourth proportional to 89,296.40, 133,944.60 and 79,187.60 is: 118,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,296.40 : 133,944.60 = 79,187.60 : x
  2. Step 2: Convert to fraction form
    89,296.40/133,944.60 = 79,187.60/x
  3. Step 3: Cross multiply
    89,296.40x = 133,944.60 × 79,187.60
  4. Step 4: Simplify right side
    89,296.40x = 10,606,751,406.96
  5. Step 5: Solve for x
    x = 10,606,751,406.96/89,296.40
  6. Step 6: Final answer
    x = 118,781.40

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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.