Home / 118,182.36-163,128.04-72,874.56

Finding the Fourth Proportional to 118,182.36, 163,128.04 and 72,874.56

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Solution

The fourth proportional to 118,182.36, 163,128.04 and 72,874.56 is: 100,589.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,182.36 : 163,128.04 = 72,874.56 : x
  2. Step 2: Convert to fraction form
    118,182.36/163,128.04 = 72,874.56/x
  3. Step 3: Cross multiply
    118,182.36x = 163,128.04 × 72,874.56
  4. Step 4: Simplify right side
    118,182.36x = 11,887,884,138.66
  5. Step 5: Solve for x
    x = 11,887,884,138.66/118,182.36
  6. Step 6: Final answer
    x = 100,589.33

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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.