Home / 221,120.68-305,154.76-125,643.52

Finding the Fourth Proportional to 221,120.68, 305,154.76 and 125,643.52

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Solution

The fourth proportional to 221,120.68, 305,154.76 and 125,643.52 is: 173,392.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,120.68 : 305,154.76 = 125,643.52 : x
  2. Step 2: Convert to fraction form
    221,120.68/305,154.76 = 125,643.52/x
  3. Step 3: Cross multiply
    221,120.68x = 305,154.76 × 125,643.52
  4. Step 4: Simplify right side
    221,120.68x = 38,340,718,191.16
  5. Step 5: Solve for x
    x = 38,340,718,191.16/221,120.68
  6. Step 6: Final answer
    x = 173,392.73

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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.