Home / 221,085.51-305,011.39-136,054.95

Finding the Fourth Proportional to 221,085.51, 305,011.39 and 136,054.95

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Solution

The fourth proportional to 221,085.51, 305,011.39 and 136,054.95 is: 187,702.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,085.51 : 305,011.39 = 136,054.95 : x
  2. Step 2: Convert to fraction form
    221,085.51/305,011.39 = 136,054.95/x
  3. Step 3: Cross multiply
    221,085.51x = 305,011.39 × 136,054.95
  4. Step 4: Simplify right side
    221,085.51x = 41,498,309,415.88
  5. Step 5: Solve for x
    x = 41,498,309,415.88/221,085.51
  6. Step 6: Final answer
    x = 187,702.53

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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.