Home / 143,115.40-214,500.30-72,958.60

Finding the Fourth Proportional to 143,115.40, 214,500.30 and 72,958.60

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Solution

The fourth proportional to 143,115.40, 214,500.30 and 72,958.60 is: 109,349.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,115.40 : 214,500.30 = 72,958.60 : x
  2. Step 2: Convert to fraction form
    143,115.40/214,500.30 = 72,958.60/x
  3. Step 3: Cross multiply
    143,115.40x = 214,500.30 × 72,958.60
  4. Step 4: Simplify right side
    143,115.40x = 15,649,641,587.58
  5. Step 5: Solve for x
    x = 15,649,641,587.58/143,115.40
  6. Step 6: Final answer
    x = 109,349.81

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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.