Home / 205,510.37-308,290.05-87,166.13

Finding the Fourth Proportional to 205,510.37, 308,290.05 and 87,166.13

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Solution

The fourth proportional to 205,510.37, 308,290.05 and 87,166.13 is: 130,759.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,510.37 : 308,290.05 = 87,166.13 : x
  2. Step 2: Convert to fraction form
    205,510.37/308,290.05 = 87,166.13/x
  3. Step 3: Cross multiply
    205,510.37x = 308,290.05 × 87,166.13
  4. Step 4: Simplify right side
    205,510.37x = 26,872,449,034.56
  5. Step 5: Solve for x
    x = 26,872,449,034.56/205,510.37
  6. Step 6: Final answer
    x = 130,759.58

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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.