Home / 221,713.20-305,962.24-121,109.04

Finding the Fourth Proportional to 221,713.20, 305,962.24 and 121,109.04

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Solution

The fourth proportional to 221,713.20, 305,962.24 and 121,109.04 is: 167,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,713.20 : 305,962.24 = 121,109.04 : x
  2. Step 2: Convert to fraction form
    221,713.20/305,962.24 = 121,109.04/x
  3. Step 3: Cross multiply
    221,713.20x = 305,962.24 × 121,109.04
  4. Step 4: Simplify right side
    221,713.20x = 37,054,793,162.65
  5. Step 5: Solve for x
    x = 37,054,793,162.65/221,713.20
  6. Step 6: Final answer
    x = 167,129.40

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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.