Home / 205,858.29-308,731.88-72,721.02

Finding the Fourth Proportional to 205,858.29, 308,731.88 and 72,721.02

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Solution

The fourth proportional to 205,858.29, 308,731.88 and 72,721.02 is: 109,061.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,858.29 : 308,731.88 = 72,721.02 : x
  2. Step 2: Convert to fraction form
    205,858.29/308,731.88 = 72,721.02/x
  3. Step 3: Cross multiply
    205,858.29x = 308,731.88 × 72,721.02
  4. Step 4: Simplify right side
    205,858.29x = 22,451,298,173.75
  5. Step 5: Solve for x
    x = 22,451,298,173.75/205,858.29
  6. Step 6: Final answer
    x = 109,061.91

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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.