Home / 138,650.76-191,338.38-74,989.17

Finding the Fourth Proportional to 138,650.76, 191,338.38 and 74,989.17

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Solution

The fourth proportional to 138,650.76, 191,338.38 and 74,989.17 is: 103,485.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,650.76 : 191,338.38 = 74,989.17 : x
  2. Step 2: Convert to fraction form
    138,650.76/191,338.38 = 74,989.17/x
  3. Step 3: Cross multiply
    138,650.76x = 191,338.38 × 74,989.17
  4. Step 4: Simplify right side
    138,650.76x = 14,348,306,305.34
  5. Step 5: Solve for x
    x = 14,348,306,305.34/138,650.76
  6. Step 6: Final answer
    x = 103,485.23

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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.