Home / 118,305.15-163,236.15-75,269.10

Finding the Fourth Proportional to 118,305.15, 163,236.15 and 75,269.10

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Solution

The fourth proportional to 118,305.15, 163,236.15 and 75,269.10 is: 103,855.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,305.15 : 163,236.15 = 75,269.10 : x
  2. Step 2: Convert to fraction form
    118,305.15/163,236.15 = 75,269.10/x
  3. Step 3: Cross multiply
    118,305.15x = 163,236.15 × 75,269.10
  4. Step 4: Simplify right side
    118,305.15x = 12,286,638,097.97
  5. Step 5: Solve for x
    x = 12,286,638,097.97/118,305.15
  6. Step 6: Final answer
    x = 103,855.48

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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.