Home / 117,853.80-162,636.66-64,138.20

Finding the Fourth Proportional to 117,853.80, 162,636.66 and 64,138.20

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Solution

The fourth proportional to 117,853.80, 162,636.66 and 64,138.20 is: 88,509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,853.80 : 162,636.66 = 64,138.20 : x
  2. Step 2: Convert to fraction form
    117,853.80/162,636.66 = 64,138.20/x
  3. Step 3: Cross multiply
    117,853.80x = 162,636.66 × 64,138.20
  4. Step 4: Simplify right side
    117,853.80x = 10,431,222,626.41
  5. Step 5: Solve for x
    x = 10,431,222,626.41/117,853.80
  6. Step 6: Final answer
    x = 88,509.85

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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.