Home / 205,632.12-308,448.14-115,680.80

Finding the Fourth Proportional to 205,632.12, 308,448.14 and 115,680.80

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Solution

The fourth proportional to 205,632.12, 308,448.14 and 115,680.80 is: 173,521.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,632.12 : 308,448.14 = 115,680.80 : x
  2. Step 2: Convert to fraction form
    205,632.12/308,448.14 = 115,680.80/x
  3. Step 3: Cross multiply
    205,632.12x = 308,448.14 × 115,680.80
  4. Step 4: Simplify right side
    205,632.12x = 35,681,527,593.71
  5. Step 5: Solve for x
    x = 35,681,527,593.71/205,632.12
  6. Step 6: Final answer
    x = 173,521.18

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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.