Home / 142,057.44-195,861.97-90,986.20

Finding the Fourth Proportional to 142,057.44, 195,861.97 and 90,986.20

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Solution

The fourth proportional to 142,057.44, 195,861.97 and 90,986.20 is: 125,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,057.44 : 195,861.97 = 90,986.20 : x
  2. Step 2: Convert to fraction form
    142,057.44/195,861.97 = 90,986.20/x
  3. Step 3: Cross multiply
    142,057.44x = 195,861.97 × 90,986.20
  4. Step 4: Simplify right side
    142,057.44x = 17,820,736,374.81
  5. Step 5: Solve for x
    x = 17,820,736,374.81/142,057.44
  6. Step 6: Final answer
    x = 125,447.40

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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.