Home / 205,760.79-308,678.04-72,718.29

Finding the Fourth Proportional to 205,760.79, 308,678.04 and 72,718.29

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Solution

The fourth proportional to 205,760.79, 308,678.04 and 72,718.29 is: 109,090.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,760.79 : 308,678.04 = 72,718.29 : x
  2. Step 2: Convert to fraction form
    205,760.79/308,678.04 = 72,718.29/x
  3. Step 3: Cross multiply
    205,760.79x = 308,678.04 × 72,718.29
  4. Step 4: Simplify right side
    205,760.79x = 22,446,539,229.35
  5. Step 5: Solve for x
    x = 22,446,539,229.35/205,760.79
  6. Step 6: Final answer
    x = 109,090.46

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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.