Home / 142,747.44-214,254-72,679.20

Finding the Fourth Proportional to 142,747.44, 214,254 and 72,679.20

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Solution

The fourth proportional to 142,747.44, 214,254 and 72,679.20 is: 109,086.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,747.44 : 214,254 = 72,679.20 : x
  2. Step 2: Convert to fraction form
    142,747.44/214,254 = 72,679.20/x
  3. Step 3: Cross multiply
    142,747.44x = 214,254 × 72,679.20
  4. Step 4: Simplify right side
    142,747.44x = 15,571,809,316.80
  5. Step 5: Solve for x
    x = 15,571,809,316.80/142,747.44
  6. Step 6: Final answer
    x = 109,086.43

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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.