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Finding the Fourth Proportional to 225,989.96, 311,865.26 and 124,017.12

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Solution

The fourth proportional to 225,989.96, 311,865.26 and 124,017.12 is: 171,143.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,989.96 : 311,865.26 = 124,017.12 : x
  2. Step 2: Convert to fraction form
    225,989.96/311,865.26 = 124,017.12/x
  3. Step 3: Cross multiply
    225,989.96x = 311,865.26 × 124,017.12
  4. Step 4: Simplify right side
    225,989.96x = 38,676,631,373.25
  5. Step 5: Solve for x
    x = 38,676,631,373.25/225,989.96
  6. Step 6: Final answer
    x = 171,143.14

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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.