Home / 221,081.32-305,005.62-136,050.76

Finding the Fourth Proportional to 221,081.32, 305,005.62 and 136,050.76

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Solution

The fourth proportional to 221,081.32, 305,005.62 and 136,050.76 is: 187,696.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,081.32 : 305,005.62 = 136,050.76 : x
  2. Step 2: Convert to fraction form
    221,081.32/305,005.62 = 136,050.76/x
  3. Step 3: Cross multiply
    221,081.32x = 305,005.62 × 136,050.76
  4. Step 4: Simplify right side
    221,081.32x = 41,496,246,531.43
  5. Step 5: Solve for x
    x = 41,496,246,531.43/221,081.32
  6. Step 6: Final answer
    x = 187,696.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.