Home / 158,906.85-219,237.13-90,899.05

Finding the Fourth Proportional to 158,906.85, 219,237.13 and 90,899.05

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Solution

The fourth proportional to 158,906.85, 219,237.13 and 90,899.05 is: 125,409.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,906.85 : 219,237.13 = 90,899.05 : x
  2. Step 2: Convert to fraction form
    158,906.85/219,237.13 = 90,899.05/x
  3. Step 3: Cross multiply
    158,906.85x = 219,237.13 × 90,899.05
  4. Step 4: Simplify right side
    158,906.85x = 19,928,446,841.73
  5. Step 5: Solve for x
    x = 19,928,446,841.73/158,906.85
  6. Step 6: Final answer
    x = 125,409.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.