Home / 236,705.16-355,076.28-78,933.72

Finding the Fourth Proportional to 236,705.16, 355,076.28 and 78,933.72

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Solution

The fourth proportional to 236,705.16, 355,076.28 and 78,933.72 is: 118,406.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,705.16 : 355,076.28 = 78,933.72 : x
  2. Step 2: Convert to fraction form
    236,705.16/355,076.28 = 78,933.72/x
  3. Step 3: Cross multiply
    236,705.16x = 355,076.28 × 78,933.72
  4. Step 4: Simplify right side
    236,705.16x = 28,027,491,664.16
  5. Step 5: Solve for x
    x = 28,027,491,664.16/236,705.16
  6. Step 6: Final answer
    x = 118,406.76

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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.