Home / 136,948.50-188,997.71-76,519.31

Finding the Fourth Proportional to 136,948.50, 188,997.71 and 76,519.31

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Solution

The fourth proportional to 136,948.50, 188,997.71 and 76,519.31 is: 105,601.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,948.50 : 188,997.71 = 76,519.31 : x
  2. Step 2: Convert to fraction form
    136,948.50/188,997.71 = 76,519.31/x
  3. Step 3: Cross multiply
    136,948.50x = 188,997.71 × 76,519.31
  4. Step 4: Simplify right side
    136,948.50x = 14,461,973,033.20
  5. Step 5: Solve for x
    x = 14,461,973,033.20/136,948.50
  6. Step 6: Final answer
    x = 105,601.54

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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.