Home / 123,961.20-186,330.60-121,628.40

Finding the Fourth Proportional to 123,961.20, 186,330.60 and 121,628.40

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Solution

The fourth proportional to 123,961.20, 186,330.60 and 121,628.40 is: 182,824.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,961.20 : 186,330.60 = 121,628.40 : x
  2. Step 2: Convert to fraction form
    123,961.20/186,330.60 = 121,628.40/x
  3. Step 3: Cross multiply
    123,961.20x = 186,330.60 × 121,628.40
  4. Step 4: Simplify right side
    123,961.20x = 22,663,092,749.04
  5. Step 5: Solve for x
    x = 22,663,092,749.04/123,961.20
  6. Step 6: Final answer
    x = 182,824.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.