Home / 90,529.29-136,015.34-85,493.70

Finding the Fourth Proportional to 90,529.29, 136,015.34 and 85,493.70

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Solution

The fourth proportional to 90,529.29, 136,015.34 and 85,493.70 is: 128,449.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,529.29 : 136,015.34 = 85,493.70 : x
  2. Step 2: Convert to fraction form
    90,529.29/136,015.34 = 85,493.70/x
  3. Step 3: Cross multiply
    90,529.29x = 136,015.34 × 85,493.70
  4. Step 4: Simplify right side
    90,529.29x = 11,628,454,245.89
  5. Step 5: Solve for x
    x = 11,628,454,245.89/90,529.29
  6. Step 6: Final answer
    x = 128,449.63

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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.