Home / 102,186.31-141,056.34-76,766.41

Finding the Fourth Proportional to 102,186.31, 141,056.34 and 76,766.41

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Solution

The fourth proportional to 102,186.31, 141,056.34 and 76,766.41 is: 105,967.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,186.31 : 141,056.34 = 76,766.41 : x
  2. Step 2: Convert to fraction form
    102,186.31/141,056.34 = 76,766.41/x
  3. Step 3: Cross multiply
    102,186.31x = 141,056.34 × 76,766.41
  4. Step 4: Simplify right side
    102,186.31x = 10,828,388,321.26
  5. Step 5: Solve for x
    x = 10,828,388,321.26/102,186.31
  6. Step 6: Final answer
    x = 105,967.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.