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Finding the Third Proportional to 77,935.50 and 120,913.13

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Solution

The third proportional to 77,935.50 and 120,913.13 is: 187,590.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,935.50 : 120,913.13 = 120,913.13 : x
  2. Step 2: Convert to fraction form
    77,935.50/120,913.13 = 120,913.13/x
  3. Step 3: Cross multiply
    77,935.50x = 120,913.13 × 120,913.13
  4. Step 4: Simplify right side
    77,935.50x = 14,619,983,797.27
  5. Step 5: Solve for x
    x = 14,619,983,797.27/77,935.50
  6. Step 6: Final answer
    x = 187,590.81

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.