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Finding the Fourth Proportional to 190,131.30, 285,211.80 and 84,960.90

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Solution

The fourth proportional to 190,131.30, 285,211.80 and 84,960.90 is: 127,447.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,131.30 : 285,211.80 = 84,960.90 : x
  2. Step 2: Convert to fraction form
    190,131.30/285,211.80 = 84,960.90/x
  3. Step 3: Cross multiply
    190,131.30x = 285,211.80 × 84,960.90
  4. Step 4: Simplify right side
    190,131.30x = 24,231,851,218.62
  5. Step 5: Solve for x
    x = 24,231,851,218.62/190,131.30
  6. Step 6: Final answer
    x = 127,447.99

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1.5x scale

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.