Home / 103,627.28-143,016.72-63,364.64

Finding the Fourth Proportional to 103,627.28, 143,016.72 and 63,364.64

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Solution

The fourth proportional to 103,627.28, 143,016.72 and 63,364.64 is: 87,449.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,627.28 : 143,016.72 = 63,364.64 : x
  2. Step 2: Convert to fraction form
    103,627.28/143,016.72 = 63,364.64/x
  3. Step 3: Cross multiply
    103,627.28x = 143,016.72 × 63,364.64
  4. Step 4: Simplify right side
    103,627.28x = 9,062,202,976.78
  5. Step 5: Solve for x
    x = 9,062,202,976.78/103,627.28
  6. Step 6: Final answer
    x = 87,449.97

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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.