Home / 147,626.20-220,856.10-128,121.40

Finding the Fourth Proportional to 147,626.20, 220,856.10 and 128,121.40

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Solution

The fourth proportional to 147,626.20, 220,856.10 and 128,121.40 is: 191,675.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,626.20 : 220,856.10 = 128,121.40 : x
  2. Step 2: Convert to fraction form
    147,626.20/220,856.10 = 128,121.40/x
  3. Step 3: Cross multiply
    147,626.20x = 220,856.10 × 128,121.40
  4. Step 4: Simplify right side
    147,626.20x = 28,296,392,730.54
  5. Step 5: Solve for x
    x = 28,296,392,730.54/147,626.20
  6. Step 6: Final answer
    x = 191,675.95

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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.