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Finding the Fourth Proportional to 137,580.60, 205,982.10 and 123,583.80

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Solution

The fourth proportional to 137,580.60, 205,982.10 and 123,583.80 is: 185,026.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,580.60 : 205,982.10 = 123,583.80 : x
  2. Step 2: Convert to fraction form
    137,580.60/205,982.10 = 123,583.80/x
  3. Step 3: Cross multiply
    137,580.60x = 205,982.10 × 123,583.80
  4. Step 4: Simplify right side
    137,580.60x = 25,456,050,649.98
  5. Step 5: Solve for x
    x = 25,456,050,649.98/137,580.60
  6. Step 6: Final answer
    x = 185,026.45

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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.