Home / 221,721.04-305,968.62-121,119.04

Finding the Fourth Proportional to 221,721.04, 305,968.62 and 121,119.04

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Solution

The fourth proportional to 221,721.04, 305,968.62 and 121,119.04 is: 167,140.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,721.04 : 305,968.62 = 121,119.04 : x
  2. Step 2: Convert to fraction form
    221,721.04/305,968.62 = 121,119.04/x
  3. Step 3: Cross multiply
    221,721.04x = 305,968.62 × 121,119.04
  4. Step 4: Simplify right side
    221,721.04x = 37,058,625,524.52
  5. Step 5: Solve for x
    x = 37,058,625,524.52/221,721.04
  6. Step 6: Final answer
    x = 167,140.77

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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.