Home / 90,863.70-136,318.23-89,356.92

Finding the Fourth Proportional to 90,863.70, 136,318.23 and 89,356.92

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Solution

The fourth proportional to 90,863.70, 136,318.23 and 89,356.92 is: 134,057.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,863.70 : 136,318.23 = 89,356.92 : x
  2. Step 2: Convert to fraction form
    90,863.70/136,318.23 = 89,356.92/x
  3. Step 3: Cross multiply
    90,863.70x = 136,318.23 × 89,356.92
  4. Step 4: Simplify right side
    90,863.70x = 12,180,977,172.65
  5. Step 5: Solve for x
    x = 12,180,977,172.65/90,863.70
  6. Step 6: Final answer
    x = 134,057.68

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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.