Home / 118,234.05-163,229.27-81,988.17

Finding the Fourth Proportional to 118,234.05, 163,229.27 and 81,988.17

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Solution

The fourth proportional to 118,234.05, 163,229.27 and 81,988.17 is: 113,189.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,234.05 : 163,229.27 = 81,988.17 : x
  2. Step 2: Convert to fraction form
    118,234.05/163,229.27 = 81,988.17/x
  3. Step 3: Cross multiply
    118,234.05x = 163,229.27 × 81,988.17
  4. Step 4: Simplify right side
    118,234.05x = 13,382,869,137.74
  5. Step 5: Solve for x
    x = 13,382,869,137.74/118,234.05
  6. Step 6: Final answer
    x = 113,189.64

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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.