Home / 170,919.84-256,454.94-90,939

Finding the Fourth Proportional to 170,919.84, 256,454.94 and 90,939

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Solution

The fourth proportional to 170,919.84, 256,454.94 and 90,939 is: 136,448.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,919.84 : 256,454.94 = 90,939 : x
  2. Step 2: Convert to fraction form
    170,919.84/256,454.94 = 90,939/x
  3. Step 3: Cross multiply
    170,919.84x = 256,454.94 × 90,939
  4. Step 4: Simplify right side
    170,919.84x = 23,321,755,333.97
  5. Step 5: Solve for x
    x = 23,321,755,333.97/170,919.84
  6. Step 6: Final answer
    x = 136,448.50

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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.