Home / 131,139.88-196,709.64-52,309.46

Finding the Fourth Proportional to 131,139.88, 196,709.64 and 52,309.46

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Solution

The fourth proportional to 131,139.88, 196,709.64 and 52,309.46 is: 78,464.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,139.88 : 196,709.64 = 52,309.46 : x
  2. Step 2: Convert to fraction form
    131,139.88/196,709.64 = 52,309.46/x
  3. Step 3: Cross multiply
    131,139.88x = 196,709.64 × 52,309.46
  4. Step 4: Simplify right side
    131,139.88x = 10,289,775,045.19
  5. Step 5: Solve for x
    x = 10,289,775,045.19/131,139.88
  6. Step 6: Final answer
    x = 78,464.12

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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.