Home / 136,699.06-188,659.29-76,290.70

Finding the Fourth Proportional to 136,699.06, 188,659.29 and 76,290.70

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Solution

The fourth proportional to 136,699.06, 188,659.29 and 76,290.70 is: 105,289.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,699.06 : 188,659.29 = 76,290.70 : x
  2. Step 2: Convert to fraction form
    136,699.06/188,659.29 = 76,290.70/x
  3. Step 3: Cross multiply
    136,699.06x = 188,659.29 × 76,290.70
  4. Step 4: Simplify right side
    136,699.06x = 14,392,949,295.60
  5. Step 5: Solve for x
    x = 14,392,949,295.60/136,699.06
  6. Step 6: Final answer
    x = 105,289.31

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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.