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Finding the Fourth Proportional to 206,755.00, 285,430.26 and 139,127.56

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Solution

The fourth proportional to 206,755.00, 285,430.26 and 139,127.56 is: 192,068.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,755.00 : 285,430.26 = 139,127.56 : x
  2. Step 2: Convert to fraction form
    206,755.00/285,430.26 = 139,127.56/x
  3. Step 3: Cross multiply
    206,755.00x = 285,430.26 × 139,127.56
  4. Step 4: Simplify right side
    206,755.00x = 39,711,215,432.12
  5. Step 5: Solve for x
    x = 39,711,215,432.12/206,755.00
  6. Step 6: Final answer
    x = 192,068.95

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1.5x scale

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.