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Finding the Fourth Proportional to 203,756.90, 305,635.50 and 70,637.27

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Solution

The fourth proportional to 203,756.90, 305,635.50 and 70,637.27 is: 105,955.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,756.90 : 305,635.50 = 70,637.27 : x
  2. Step 2: Convert to fraction form
    203,756.90/305,635.50 = 70,637.27/x
  3. Step 3: Cross multiply
    203,756.90x = 305,635.50 × 70,637.27
  4. Step 4: Simplify right side
    203,756.90x = 21,589,255,806.91
  5. Step 5: Solve for x
    x = 21,589,255,806.91/203,756.90
  6. Step 6: Final answer
    x = 105,955.95

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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.