Home / 205,476.56-308,239.40-87,132.52

Finding the Fourth Proportional to 205,476.56, 308,239.40 and 87,132.52

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Solution

The fourth proportional to 205,476.56, 308,239.40 and 87,132.52 is: 130,709.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,476.56 : 308,239.40 = 87,132.52 : x
  2. Step 2: Convert to fraction form
    205,476.56/308,239.40 = 87,132.52/x
  3. Step 3: Cross multiply
    205,476.56x = 308,239.40 × 87,132.52
  4. Step 4: Simplify right side
    205,476.56x = 26,857,675,685.29
  5. Step 5: Solve for x
    x = 26,857,675,685.29/205,476.56
  6. Step 6: Final answer
    x = 130,709.19

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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.