Home / 136,329.03-188,132.27-78,976.17

Finding the Fourth Proportional to 136,329.03, 188,132.27 and 78,976.17

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Solution

The fourth proportional to 136,329.03, 188,132.27 and 78,976.17 is: 108,986.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,329.03 : 188,132.27 = 78,976.17 : x
  2. Step 2: Convert to fraction form
    136,329.03/188,132.27 = 78,976.17/x
  3. Step 3: Cross multiply
    136,329.03x = 188,132.27 × 78,976.17
  4. Step 4: Simplify right side
    136,329.03x = 14,857,964,802.46
  5. Step 5: Solve for x
    x = 14,857,964,802.46/136,329.03
  6. Step 6: Final answer
    x = 108,986.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.