Home / 136,322.03-188,122.61-78,969.17

Finding the Fourth Proportional to 136,322.03, 188,122.61 and 78,969.17

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Solution

The fourth proportional to 136,322.03, 188,122.61 and 78,969.17 is: 108,976.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,322.03 : 188,122.61 = 78,969.17 : x
  2. Step 2: Convert to fraction form
    136,322.03/188,122.61 = 78,969.17/x
  3. Step 3: Cross multiply
    136,322.03x = 188,122.61 × 78,969.17
  4. Step 4: Simplify right side
    136,322.03x = 14,855,885,034.47
  5. Step 5: Solve for x
    x = 14,855,885,034.47/136,322.03
  6. Step 6: Final answer
    x = 108,976.41

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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.