Home / 147,610.20-221,415.30-85,207.80

Finding the Fourth Proportional to 147,610.20, 221,415.30 and 85,207.80

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Solution

The fourth proportional to 147,610.20, 221,415.30 and 85,207.80 is: 127,811.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,610.20 : 221,415.30 = 85,207.80 : x
  2. Step 2: Convert to fraction form
    147,610.20/221,415.30 = 85,207.80/x
  3. Step 3: Cross multiply
    147,610.20x = 221,415.30 × 85,207.80
  4. Step 4: Simplify right side
    147,610.20x = 18,866,310,599.34
  5. Step 5: Solve for x
    x = 18,866,310,599.34/147,610.20
  6. Step 6: Final answer
    x = 127,811.70

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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.