Home / 143,121.60-214,682.40-72,262.80

Finding the Fourth Proportional to 143,121.60, 214,682.40 and 72,262.80

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Solution

The fourth proportional to 143,121.60, 214,682.40 and 72,262.80 is: 108,394.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,121.60 : 214,682.40 = 72,262.80 : x
  2. Step 2: Convert to fraction form
    143,121.60/214,682.40 = 72,262.80/x
  3. Step 3: Cross multiply
    143,121.60x = 214,682.40 × 72,262.80
  4. Step 4: Simplify right side
    143,121.60x = 15,513,551,334.72
  5. Step 5: Solve for x
    x = 15,513,551,334.72/143,121.60
  6. Step 6: Final answer
    x = 108,394.20

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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.