Home / 143,380.44-197,854.74-78,854.22

Finding the Fourth Proportional to 143,380.44, 197,854.74 and 78,854.22

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Solution

The fourth proportional to 143,380.44, 197,854.74 and 78,854.22 is: 108,813.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,380.44 : 197,854.74 = 78,854.22 : x
  2. Step 2: Convert to fraction form
    143,380.44/197,854.74 = 78,854.22/x
  3. Step 3: Cross multiply
    143,380.44x = 197,854.74 × 78,854.22
  4. Step 4: Simplify right side
    143,380.44x = 15,601,681,363.35
  5. Step 5: Solve for x
    x = 15,601,681,363.35/143,380.44
  6. Step 6: Final answer
    x = 108,813.18

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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.