Home / 221,147.60-305,194.32-124,381.76

Finding the Fourth Proportional to 221,147.60, 305,194.32 and 124,381.76

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Solution

The fourth proportional to 221,147.60, 305,194.32 and 124,381.76 is: 171,652.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,147.60 : 305,194.32 = 124,381.76 : x
  2. Step 2: Convert to fraction form
    221,147.60/305,194.32 = 124,381.76/x
  3. Step 3: Cross multiply
    221,147.60x = 305,194.32 × 124,381.76
  4. Step 4: Simplify right side
    221,147.60x = 37,960,605,137.63
  5. Step 5: Solve for x
    x = 37,960,605,137.63/221,147.60
  6. Step 6: Final answer
    x = 171,652.81

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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.