Home / 312,777.07-469,165.65-76,119.75

Finding the Fourth Proportional to 312,777.07, 469,165.65 and 76,119.75

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Solution

The fourth proportional to 312,777.07, 469,165.65 and 76,119.75 is: 114,179.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,777.07 : 469,165.65 = 76,119.75 : x
  2. Step 2: Convert to fraction form
    312,777.07/469,165.65 = 76,119.75/x
  3. Step 3: Cross multiply
    312,777.07x = 469,165.65 × 76,119.75
  4. Step 4: Simplify right side
    312,777.07x = 35,712,769,260.16
  5. Step 5: Solve for x
    x = 35,712,769,260.16/312,777.07
  6. Step 6: Final answer
    x = 114,179.63

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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.