Home / 138,905.44-191,690.43-75,243.24

Finding the Fourth Proportional to 138,905.44, 191,690.43 and 75,243.24

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Solution

The fourth proportional to 138,905.44, 191,690.43 and 75,243.24 is: 103,836.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,905.44 : 191,690.43 = 75,243.24 : x
  2. Step 2: Convert to fraction form
    138,905.44/191,690.43 = 75,243.24/x
  3. Step 3: Cross multiply
    138,905.44x = 191,690.43 × 75,243.24
  4. Step 4: Simplify right side
    138,905.44x = 14,423,409,030.19
  5. Step 5: Solve for x
    x = 14,423,409,030.19/138,905.44
  6. Step 6: Final answer
    x = 103,836.17

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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.