Home / 105,961.32-158,922.81-42,778.80

Finding the Fourth Proportional to 105,961.32, 158,922.81 and 42,778.80

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Solution

The fourth proportional to 105,961.32, 158,922.81 and 42,778.80 is: 64,160.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,961.32 : 158,922.81 = 42,778.80 : x
  2. Step 2: Convert to fraction form
    105,961.32/158,922.81 = 42,778.80/x
  3. Step 3: Cross multiply
    105,961.32x = 158,922.81 × 42,778.80
  4. Step 4: Simplify right side
    105,961.32x = 6,798,527,104.43
  5. Step 5: Solve for x
    x = 6,798,527,104.43/105,961.32
  6. Step 6: Final answer
    x = 64,160.46

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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.