Home / 136,949.04-188,970.72-76,512.12

Finding the Fourth Proportional to 136,949.04, 188,970.72 and 76,512.12

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Solution

The fourth proportional to 136,949.04, 188,970.72 and 76,512.12 is: 105,576.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,949.04 : 188,970.72 = 76,512.12 : x
  2. Step 2: Convert to fraction form
    136,949.04/188,970.72 = 76,512.12/x
  3. Step 3: Cross multiply
    136,949.04x = 188,970.72 × 76,512.12
  4. Step 4: Simplify right side
    136,949.04x = 14,458,550,405.13
  5. Step 5: Solve for x
    x = 14,458,550,405.13/136,949.04
  6. Step 6: Final answer
    x = 105,576.14

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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.