Home / 130,173.75-179,588.43-81,747.20

Finding the Fourth Proportional to 130,173.75, 179,588.43 and 81,747.20

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Solution

The fourth proportional to 130,173.75, 179,588.43 and 81,747.20 is: 112,778.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,173.75 : 179,588.43 = 81,747.20 : x
  2. Step 2: Convert to fraction form
    130,173.75/179,588.43 = 81,747.20/x
  3. Step 3: Cross multiply
    130,173.75x = 179,588.43 × 81,747.20
  4. Step 4: Simplify right side
    130,173.75x = 14,680,850,406.95
  5. Step 5: Solve for x
    x = 14,680,850,406.95/130,173.75
  6. Step 6: Final answer
    x = 112,778.89

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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.