Home / 140,768.72-194,260.85-77,108.79

Finding the Fourth Proportional to 140,768.72, 194,260.85 and 77,108.79

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Solution

The fourth proportional to 140,768.72, 194,260.85 and 77,108.79 is: 106,410.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,768.72 : 194,260.85 = 77,108.79 : x
  2. Step 2: Convert to fraction form
    140,768.72/194,260.85 = 77,108.79/x
  3. Step 3: Cross multiply
    140,768.72x = 194,260.85 × 77,108.79
  4. Step 4: Simplify right side
    140,768.72x = 14,979,219,719.96
  5. Step 5: Solve for x
    x = 14,979,219,719.96/140,768.72
  6. Step 6: Final answer
    x = 106,410.14

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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.