Home / 205,822.32-308,881.20-87,576.72

Finding the Fourth Proportional to 205,822.32, 308,881.20 and 87,576.72

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Solution

The fourth proportional to 205,822.32, 308,881.20 and 87,576.72 is: 131,427.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,822.32 : 308,881.20 = 87,576.72 : x
  2. Step 2: Convert to fraction form
    205,822.32/308,881.20 = 87,576.72/x
  3. Step 3: Cross multiply
    205,822.32x = 308,881.20 × 87,576.72
  4. Step 4: Simplify right side
    205,822.32x = 27,050,802,365.66
  5. Step 5: Solve for x
    x = 27,050,802,365.66/205,822.32
  6. Step 6: Final answer
    x = 131,427.93

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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.