Home / 147,517.45-221,440.20-91,420.90

Finding the Fourth Proportional to 147,517.45, 221,440.20 and 91,420.90

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Solution

The fourth proportional to 147,517.45, 221,440.20 and 91,420.90 is: 137,233.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,517.45 : 221,440.20 = 91,420.90 : x
  2. Step 2: Convert to fraction form
    147,517.45/221,440.20 = 91,420.90/x
  3. Step 3: Cross multiply
    147,517.45x = 221,440.20 × 91,420.90
  4. Step 4: Simplify right side
    147,517.45x = 20,244,262,380.18
  5. Step 5: Solve for x
    x = 20,244,262,380.18/147,517.45
  6. Step 6: Final answer
    x = 137,233.00

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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.