Home / 147,820.20-221,681.70-54,313.80

Finding the Fourth Proportional to 147,820.20, 221,681.70 and 54,313.80

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Solution

The fourth proportional to 147,820.20, 221,681.70 and 54,313.80 is: 81,452.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,820.20 : 221,681.70 = 54,313.80 : x
  2. Step 2: Convert to fraction form
    147,820.20/221,681.70 = 54,313.80/x
  3. Step 3: Cross multiply
    147,820.20x = 221,681.70 × 54,313.80
  4. Step 4: Simplify right side
    147,820.20x = 12,040,375,517.46
  5. Step 5: Solve for x
    x = 12,040,375,517.46/147,820.20
  6. Step 6: Final answer
    x = 81,452.84

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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.