Home / 136,617.65-188,531.99-76,188.36

Finding the Fourth Proportional to 136,617.65, 188,531.99 and 76,188.36

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Solution

The fourth proportional to 136,617.65, 188,531.99 and 76,188.36 is: 105,139.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,617.65 : 188,531.99 = 76,188.36 : x
  2. Step 2: Convert to fraction form
    136,617.65/188,531.99 = 76,188.36/x
  3. Step 3: Cross multiply
    136,617.65x = 188,531.99 × 76,188.36
  4. Step 4: Simplify right side
    136,617.65x = 14,363,942,744.69
  5. Step 5: Solve for x
    x = 14,363,942,744.69/136,617.65
  6. Step 6: Final answer
    x = 105,139.73

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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.