Home / 205,947.40-308,921.10-72,826.60

Finding the Fourth Proportional to 205,947.40, 308,921.10 and 72,826.60

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Solution

The fourth proportional to 205,947.40, 308,921.10 and 72,826.60 is: 109,239.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,947.40 : 308,921.10 = 72,826.60 : x
  2. Step 2: Convert to fraction form
    205,947.40/308,921.10 = 72,826.60/x
  3. Step 3: Cross multiply
    205,947.40x = 308,921.10 × 72,826.60
  4. Step 4: Simplify right side
    205,947.40x = 22,497,673,381.26
  5. Step 5: Solve for x
    x = 22,497,673,381.26/205,947.40
  6. Step 6: Final answer
    x = 109,239.90

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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.