Home / 78,205.01-117,308.66-54,165.61

Finding the Fourth Proportional to 78,205.01, 117,308.66 and 54,165.61

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Solution

The fourth proportional to 78,205.01, 117,308.66 and 54,165.61 is: 81,249.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,205.01 : 117,308.66 = 54,165.61 : x
  2. Step 2: Convert to fraction form
    78,205.01/117,308.66 = 54,165.61/x
  3. Step 3: Cross multiply
    78,205.01x = 117,308.66 × 54,165.61
  4. Step 4: Simplify right side
    78,205.01x = 6,354,094,969.32
  5. Step 5: Solve for x
    x = 6,354,094,969.32/78,205.01
  6. Step 6: Final answer
    x = 81,249.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.