Home / 127,965.70-191,948.53-68,719.87

Finding the Fourth Proportional to 127,965.70, 191,948.53 and 68,719.87

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Solution

The fourth proportional to 127,965.70, 191,948.53 and 68,719.87 is: 103,079.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,965.70 : 191,948.53 = 68,719.87 : x
  2. Step 2: Convert to fraction form
    127,965.70/191,948.53 = 68,719.87/x
  3. Step 3: Cross multiply
    127,965.70x = 191,948.53 × 68,719.87
  4. Step 4: Simplify right side
    127,965.70x = 13,190,678,028.29
  5. Step 5: Solve for x
    x = 13,190,678,028.29/127,965.70
  6. Step 6: Final answer
    x = 103,079.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.