Home / 86,871.06-130,957.56-81,084.39

Finding the Fourth Proportional to 86,871.06, 130,957.56 and 81,084.39

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Solution

The fourth proportional to 86,871.06, 130,957.56 and 81,084.39 is: 122,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,871.06 : 130,957.56 = 81,084.39 : x
  2. Step 2: Convert to fraction form
    86,871.06/130,957.56 = 81,084.39/x
  3. Step 3: Cross multiply
    86,871.06x = 130,957.56 × 81,084.39
  4. Step 4: Simplify right side
    86,871.06x = 10,618,614,114.03
  5. Step 5: Solve for x
    x = 10,618,614,114.03/86,871.06
  6. Step 6: Final answer
    x = 122,234.20

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.