Home / 131,939.64-197,959.28-79,386.03

Finding the Fourth Proportional to 131,939.64, 197,959.28 and 79,386.03

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Solution

The fourth proportional to 131,939.64, 197,959.28 and 79,386.03 is: 119,109.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,939.64 : 197,959.28 = 79,386.03 : x
  2. Step 2: Convert to fraction form
    131,939.64/197,959.28 = 79,386.03/x
  3. Step 3: Cross multiply
    131,939.64x = 197,959.28 × 79,386.03
  4. Step 4: Simplify right side
    131,939.64x = 15,715,200,943.93
  5. Step 5: Solve for x
    x = 15,715,200,943.93/131,939.64
  6. Step 6: Final answer
    x = 119,109.02

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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.