Home / 118,201.28-163,103.10-72,284

Finding the Fourth Proportional to 118,201.28, 163,103.10 and 72,284

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Solution

The fourth proportional to 118,201.28, 163,103.10 and 72,284 is: 99,742.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,201.28 : 163,103.10 = 72,284 : x
  2. Step 2: Convert to fraction form
    118,201.28/163,103.10 = 72,284/x
  3. Step 3: Cross multiply
    118,201.28x = 163,103.10 × 72,284
  4. Step 4: Simplify right side
    118,201.28x = 11,789,744,480.40
  5. Step 5: Solve for x
    x = 11,789,744,480.40/118,201.28
  6. Step 6: Final answer
    x = 99,742.95

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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.