Home / 78,939.88-118,173.30-58,177.96

Finding the Fourth Proportional to 78,939.88, 118,173.30 and 58,177.96

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Solution

The fourth proportional to 78,939.88, 118,173.30 and 58,177.96 is: 87,092.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,939.88 : 118,173.30 = 58,177.96 : x
  2. Step 2: Convert to fraction form
    78,939.88/118,173.30 = 58,177.96/x
  3. Step 3: Cross multiply
    78,939.88x = 118,173.30 × 58,177.96
  4. Step 4: Simplify right side
    78,939.88x = 6,875,081,520.47
  5. Step 5: Solve for x
    x = 6,875,081,520.47/78,939.88
  6. Step 6: Final answer
    x = 87,092.63

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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.