Home / 221,121.64-305,156.10-125,644.52

Finding the Fourth Proportional to 221,121.64, 305,156.10 and 125,644.52

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Solution

The fourth proportional to 221,121.64, 305,156.10 and 125,644.52 is: 173,394.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,121.64 : 305,156.10 = 125,644.52 : x
  2. Step 2: Convert to fraction form
    221,121.64/305,156.10 = 125,644.52/x
  3. Step 3: Cross multiply
    221,121.64x = 305,156.10 × 125,644.52
  4. Step 4: Simplify right side
    221,121.64x = 38,341,191,709.57
  5. Step 5: Solve for x
    x = 38,341,191,709.57/221,121.64
  6. Step 6: Final answer
    x = 173,394.12

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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.