Home / 90,305.50-135,156.03-89,110.66

Finding the Fourth Proportional to 90,305.50, 135,156.03 and 89,110.66

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Solution

The fourth proportional to 90,305.50, 135,156.03 and 89,110.66 is: 133,367.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,305.50 : 135,156.03 = 89,110.66 : x
  2. Step 2: Convert to fraction form
    90,305.50/135,156.03 = 89,110.66/x
  3. Step 3: Cross multiply
    90,305.50x = 135,156.03 × 89,110.66
  4. Step 4: Simplify right side
    90,305.50x = 12,043,843,036.28
  5. Step 5: Solve for x
    x = 12,043,843,036.28/90,305.50
  6. Step 6: Final answer
    x = 133,367.77

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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.