Home / 118,182.35-163,128.03-72,874.55

Finding the Fourth Proportional to 118,182.35, 163,128.03 and 72,874.55

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Solution

The fourth proportional to 118,182.35, 163,128.03 and 72,874.55 is: 100,589.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,182.35 : 163,128.03 = 72,874.55 : x
  2. Step 2: Convert to fraction form
    118,182.35/163,128.03 = 72,874.55/x
  3. Step 3: Cross multiply
    118,182.35x = 163,128.03 × 72,874.55
  4. Step 4: Simplify right side
    118,182.35x = 11,887,881,778.64
  5. Step 5: Solve for x
    x = 11,887,881,778.64/118,182.35
  6. Step 6: Final answer
    x = 100,589.32

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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.