Home / 131,962.21-181,990.27-102,897.78

Finding the Fourth Proportional to 131,962.21, 181,990.27 and 102,897.78

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Solution

The fourth proportional to 131,962.21, 181,990.27 and 102,897.78 is: 141,907.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,962.21 : 181,990.27 = 102,897.78 : x
  2. Step 2: Convert to fraction form
    131,962.21/181,990.27 = 102,897.78/x
  3. Step 3: Cross multiply
    131,962.21x = 181,990.27 × 102,897.78
  4. Step 4: Simplify right side
    131,962.21x = 18,726,394,250.11
  5. Step 5: Solve for x
    x = 18,726,394,250.11/131,962.21
  6. Step 6: Final answer
    x = 141,907.25

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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.