Home / 138,480.19-191,102.75-74,817.97

Finding the Fourth Proportional to 138,480.19, 191,102.75 and 74,817.97

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Solution

The fourth proportional to 138,480.19, 191,102.75 and 74,817.97 is: 103,248.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,480.19 : 191,102.75 = 74,817.97 : x
  2. Step 2: Convert to fraction form
    138,480.19/191,102.75 = 74,817.97/x
  3. Step 3: Cross multiply
    138,480.19x = 191,102.75 × 74,817.97
  4. Step 4: Simplify right side
    138,480.19x = 14,297,919,816.42
  5. Step 5: Solve for x
    x = 14,297,919,816.42/138,480.19
  6. Step 6: Final answer
    x = 103,248.85

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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.