Home / 138,639.26-191,322.18-74,977.04

Finding the Fourth Proportional to 138,639.26, 191,322.18 and 74,977.04

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Solution

The fourth proportional to 138,639.26, 191,322.18 and 74,977.04 is: 103,468.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,639.26 : 191,322.18 = 74,977.04 : x
  2. Step 2: Convert to fraction form
    138,639.26/191,322.18 = 74,977.04/x
  3. Step 3: Cross multiply
    138,639.26x = 191,322.18 × 74,977.04
  4. Step 4: Simplify right side
    138,639.26x = 14,344,769,786.14
  5. Step 5: Solve for x
    x = 14,344,769,786.14/138,639.26
  6. Step 6: Final answer
    x = 103,468.31

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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.