Home / 221,103.72-305,124.14-125,615.65

Finding the Fourth Proportional to 221,103.72, 305,124.14 and 125,615.65

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Solution

The fourth proportional to 221,103.72, 305,124.14 and 125,615.65 is: 173,350.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,103.72 : 305,124.14 = 125,615.65 : x
  2. Step 2: Convert to fraction form
    221,103.72/305,124.14 = 125,615.65/x
  3. Step 3: Cross multiply
    221,103.72x = 305,124.14 × 125,615.65
  4. Step 4: Simplify right side
    221,103.72x = 38,328,367,176.79
  5. Step 5: Solve for x
    x = 38,328,367,176.79/221,103.72
  6. Step 6: Final answer
    x = 173,350.17

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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.