Home / 147,636.30-221,454.45-137,138.70

Finding the Fourth Proportional to 147,636.30, 221,454.45 and 137,138.70

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Solution

The fourth proportional to 147,636.30, 221,454.45 and 137,138.70 is: 205,708.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,636.30 : 221,454.45 = 137,138.70 : x
  2. Step 2: Convert to fraction form
    147,636.30/221,454.45 = 137,138.70/x
  3. Step 3: Cross multiply
    147,636.30x = 221,454.45 × 137,138.70
  4. Step 4: Simplify right side
    147,636.30x = 30,369,975,382.22
  5. Step 5: Solve for x
    x = 30,369,975,382.22/147,636.30
  6. Step 6: Final answer
    x = 205,708.05

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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.