Home / 205,916.20-308,874.30-72,795.40

Finding the Fourth Proportional to 205,916.20, 308,874.30 and 72,795.40

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Solution

The fourth proportional to 205,916.20, 308,874.30 and 72,795.40 is: 109,193.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,916.20 : 308,874.30 = 72,795.40 : x
  2. Step 2: Convert to fraction form
    205,916.20/308,874.30 = 72,795.40/x
  3. Step 3: Cross multiply
    205,916.20x = 308,874.30 × 72,795.40
  4. Step 4: Simplify right side
    205,916.20x = 22,484,628,218.22
  5. Step 5: Solve for x
    x = 22,484,628,218.22/205,916.20
  6. Step 6: Final answer
    x = 109,193.10

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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.