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Finding the Fourth Proportional to 138,750.41, 191,315.94 and 102,504.30

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Solution

The fourth proportional to 138,750.41, 191,315.94 and 102,504.30 is: 141,338.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,750.41 : 191,315.94 = 102,504.30 : x
  2. Step 2: Convert to fraction form
    138,750.41/191,315.94 = 102,504.30/x
  3. Step 3: Cross multiply
    138,750.41x = 191,315.94 × 102,504.30
  4. Step 4: Simplify right side
    138,750.41x = 19,610,706,508.54
  5. Step 5: Solve for x
    x = 19,610,706,508.54/138,750.41
  6. Step 6: Final answer
    x = 141,338.01

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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.