Home / 221,100.37-305,119.53-125,612.30

Finding the Fourth Proportional to 221,100.37, 305,119.53 and 125,612.30

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Solution

The fourth proportional to 221,100.37, 305,119.53 and 125,612.30 is: 173,345.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,100.37 : 305,119.53 = 125,612.30 : x
  2. Step 2: Convert to fraction form
    221,100.37/305,119.53 = 125,612.30/x
  3. Step 3: Cross multiply
    221,100.37x = 305,119.53 × 125,612.30
  4. Step 4: Simplify right side
    221,100.37x = 38,326,765,938.22
  5. Step 5: Solve for x
    x = 38,326,765,938.22/221,100.37
  6. Step 6: Final answer
    x = 173,345.55

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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.