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Finding the Fourth Proportional to 225,065.88, 310,669.14 and 129,610.60

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Solution

The fourth proportional to 225,065.88, 310,669.14 and 129,610.60 is: 178,907.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,065.88 : 310,669.14 = 129,610.60 : x
  2. Step 2: Convert to fraction form
    225,065.88/310,669.14 = 129,610.60/x
  3. Step 3: Cross multiply
    225,065.88x = 310,669.14 × 129,610.60
  4. Step 4: Simplify right side
    225,065.88x = 40,266,013,636.88
  5. Step 5: Solve for x
    x = 40,266,013,636.88/225,065.88
  6. Step 6: Final answer
    x = 178,907.68

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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.