Home / 221,085.33-305,011.14-136,054.77

Finding the Fourth Proportional to 221,085.33, 305,011.14 and 136,054.77

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Solution

The fourth proportional to 221,085.33, 305,011.14 and 136,054.77 is: 187,702.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,085.33 : 305,011.14 = 136,054.77 : x
  2. Step 2: Convert to fraction form
    221,085.33/305,011.14 = 136,054.77/x
  3. Step 3: Cross multiply
    221,085.33x = 305,011.14 × 136,054.77
  4. Step 4: Simplify right side
    221,085.33x = 41,498,220,500.14
  5. Step 5: Solve for x
    x = 41,498,220,500.14/221,085.33
  6. Step 6: Final answer
    x = 187,702.28

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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.