Home / 127,965.72-191,948.55-68,719.89

Finding the Fourth Proportional to 127,965.72, 191,948.55 and 68,719.89

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Solution

The fourth proportional to 127,965.72, 191,948.55 and 68,719.89 is: 103,079.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,965.72 : 191,948.55 = 68,719.89 : x
  2. Step 2: Convert to fraction form
    127,965.72/191,948.55 = 68,719.89/x
  3. Step 3: Cross multiply
    127,965.72x = 191,948.55 × 68,719.89
  4. Step 4: Simplify right side
    127,965.72x = 13,190,683,241.66
  5. Step 5: Solve for x
    x = 13,190,683,241.66/127,965.72
  6. Step 6: Final answer
    x = 103,079.82

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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.