Home / 143,379.84-214,778.12-72,258.60

Finding the Fourth Proportional to 143,379.84, 214,778.12 and 72,258.60

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Solution

The fourth proportional to 143,379.84, 214,778.12 and 72,258.60 is: 108,240.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,379.84 : 214,778.12 = 72,258.60 : x
  2. Step 2: Convert to fraction form
    143,379.84/214,778.12 = 72,258.60/x
  3. Step 3: Cross multiply
    143,379.84x = 214,778.12 × 72,258.60
  4. Step 4: Simplify right side
    143,379.84x = 15,519,566,261.83
  5. Step 5: Solve for x
    x = 15,519,566,261.83/143,379.84
  6. Step 6: Final answer
    x = 108,240.92

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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.