Home / 138,623.94-191,300.13-74,961.45

Finding the Fourth Proportional to 138,623.94, 191,300.13 and 74,961.45

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Solution

The fourth proportional to 138,623.94, 191,300.13 and 74,961.45 is: 103,446.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,623.94 : 191,300.13 = 74,961.45 : x
  2. Step 2: Convert to fraction form
    138,623.94/191,300.13 = 74,961.45/x
  3. Step 3: Cross multiply
    138,623.94x = 191,300.13 × 74,961.45
  4. Step 4: Simplify right side
    138,623.94x = 14,340,135,129.99
  5. Step 5: Solve for x
    x = 14,340,135,129.99/138,623.94
  6. Step 6: Final answer
    x = 103,446.31

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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.