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Finding the Fourth Proportional to 207,625.30, 310,919.55 and 137,122.90

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Solution

The fourth proportional to 207,625.30, 310,919.55 and 137,122.90 is: 205,341.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,625.30 : 310,919.55 = 137,122.90 : x
  2. Step 2: Convert to fraction form
    207,625.30/310,919.55 = 137,122.90/x
  3. Step 3: Cross multiply
    207,625.30x = 310,919.55 × 137,122.90
  4. Step 4: Simplify right side
    207,625.30x = 42,634,190,362.70
  5. Step 5: Solve for x
    x = 42,634,190,362.70/207,625.30
  6. Step 6: Final answer
    x = 205,341.98

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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.