Home / 147,914.11-221,680.54-128,861.69

Finding the Fourth Proportional to 147,914.11, 221,680.54 and 128,861.69

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Solution

The fourth proportional to 147,914.11, 221,680.54 and 128,861.69 is: 193,126.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,914.11 : 221,680.54 = 128,861.69 : x
  2. Step 2: Convert to fraction form
    147,914.11/221,680.54 = 128,861.69/x
  3. Step 3: Cross multiply
    147,914.11x = 221,680.54 × 128,861.69
  4. Step 4: Simplify right side
    147,914.11x = 28,566,128,380.20
  5. Step 5: Solve for x
    x = 28,566,128,380.20/147,914.11
  6. Step 6: Final answer
    x = 193,126.47

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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.