Home / 138,549.17-191,198.73-74,886.81

Finding the Fourth Proportional to 138,549.17, 191,198.73 and 74,886.81

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Solution

The fourth proportional to 138,549.17, 191,198.73 and 74,886.81 is: 103,344.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,549.17 : 191,198.73 = 74,886.81 : x
  2. Step 2: Convert to fraction form
    138,549.17/191,198.73 = 74,886.81/x
  3. Step 3: Cross multiply
    138,549.17x = 191,198.73 × 74,886.81
  4. Step 4: Simplify right side
    138,549.17x = 14,318,262,965.75
  5. Step 5: Solve for x
    x = 14,318,262,965.75/138,549.17
  6. Step 6: Final answer
    x = 103,344.27

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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.