Home / 89,845.20-134,508.60-79,477.20

Finding the Fourth Proportional to 89,845.20, 134,508.60 and 79,477.20

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Solution

The fourth proportional to 89,845.20, 134,508.60 and 79,477.20 is: 118,986.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,845.20 : 134,508.60 = 79,477.20 : x
  2. Step 2: Convert to fraction form
    89,845.20/134,508.60 = 79,477.20/x
  3. Step 3: Cross multiply
    89,845.20x = 134,508.60 × 79,477.20
  4. Step 4: Simplify right side
    89,845.20x = 10,690,366,903.92
  5. Step 5: Solve for x
    x = 10,690,366,903.92/89,845.20
  6. Step 6: Final answer
    x = 118,986.51

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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.