Home / 135,764.14-203,664.73-78,864.78

Finding the Fourth Proportional to 135,764.14, 203,664.73 and 78,864.78

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Solution

The fourth proportional to 135,764.14, 203,664.73 and 78,864.78 is: 118,307.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,764.14 : 203,664.73 = 78,864.78 : x
  2. Step 2: Convert to fraction form
    135,764.14/203,664.73 = 78,864.78/x
  3. Step 3: Cross multiply
    135,764.14x = 203,664.73 × 78,864.78
  4. Step 4: Simplify right side
    135,764.14x = 16,061,973,106.89
  5. Step 5: Solve for x
    x = 16,061,973,106.89/135,764.14
  6. Step 6: Final answer
    x = 118,307.93

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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.