Home / 90,715.70-136,073.55-80,693.30

Finding the Fourth Proportional to 90,715.70, 136,073.55 and 80,693.30

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Solution

The fourth proportional to 90,715.70, 136,073.55 and 80,693.30 is: 121,039.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,715.70 : 136,073.55 = 80,693.30 : x
  2. Step 2: Convert to fraction form
    90,715.70/136,073.55 = 80,693.30/x
  3. Step 3: Cross multiply
    90,715.70x = 136,073.55 × 80,693.30
  4. Step 4: Simplify right side
    90,715.70x = 10,980,223,792.22
  5. Step 5: Solve for x
    x = 10,980,223,792.22/90,715.70
  6. Step 6: Final answer
    x = 121,039.95

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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.