Home / 100,502.13-138,693.22-55,183.05

Finding the Fourth Proportional to 100,502.13, 138,693.22 and 55,183.05

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Solution

The fourth proportional to 100,502.13, 138,693.22 and 55,183.05 is: 76,152.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,502.13 : 138,693.22 = 55,183.05 : x
  2. Step 2: Convert to fraction form
    100,502.13/138,693.22 = 55,183.05/x
  3. Step 3: Cross multiply
    100,502.13x = 138,693.22 × 55,183.05
  4. Step 4: Simplify right side
    100,502.13x = 7,653,514,893.92
  5. Step 5: Solve for x
    x = 7,653,514,893.92/100,502.13
  6. Step 6: Final answer
    x = 76,152.76

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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.