Home / 221,123.06-305,147.30-125,627.72

Finding the Fourth Proportional to 221,123.06, 305,147.30 and 125,627.72

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Solution

The fourth proportional to 221,123.06, 305,147.30 and 125,627.72 is: 173,364.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,123.06 : 305,147.30 = 125,627.72 : x
  2. Step 2: Convert to fraction form
    221,123.06/305,147.30 = 125,627.72/x
  3. Step 3: Cross multiply
    221,123.06x = 305,147.30 × 125,627.72
  4. Step 4: Simplify right side
    221,123.06x = 38,334,959,563.16
  5. Step 5: Solve for x
    x = 38,334,959,563.16/221,123.06
  6. Step 6: Final answer
    x = 173,364.82

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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.