Home / 130,108.89-179,540.28-79,114.64

Finding the Fourth Proportional to 130,108.89, 179,540.28 and 79,114.64

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Solution

The fourth proportional to 130,108.89, 179,540.28 and 79,114.64 is: 109,172.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,108.89 : 179,540.28 = 79,114.64 : x
  2. Step 2: Convert to fraction form
    130,108.89/179,540.28 = 79,114.64/x
  3. Step 3: Cross multiply
    130,108.89x = 179,540.28 × 79,114.64
  4. Step 4: Simplify right side
    130,108.89x = 14,204,263,720.00
  5. Step 5: Solve for x
    x = 14,204,263,720.00/130,108.89
  6. Step 6: Final answer
    x = 109,172.12

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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.