Home / 129,643.54-178,901.66-73,058.56

Finding the Fourth Proportional to 129,643.54, 178,901.66 and 73,058.56

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Solution

The fourth proportional to 129,643.54, 178,901.66 and 73,058.56 is: 100,817.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,643.54 : 178,901.66 = 73,058.56 : x
  2. Step 2: Convert to fraction form
    129,643.54/178,901.66 = 73,058.56/x
  3. Step 3: Cross multiply
    129,643.54x = 178,901.66 × 73,058.56
  4. Step 4: Simplify right side
    129,643.54x = 13,070,297,661.21
  5. Step 5: Solve for x
    x = 13,070,297,661.21/129,643.54
  6. Step 6: Final answer
    x = 100,817.19

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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.