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Finding the Fourth Proportional to 134,605.99, 201,967.31 and 72,203.59

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Solution

The fourth proportional to 134,605.99, 201,967.31 and 72,203.59 is: 108,336.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,605.99 : 201,967.31 = 72,203.59 : x
  2. Step 2: Convert to fraction form
    134,605.99/201,967.31 = 72,203.59/x
  3. Step 3: Cross multiply
    134,605.99x = 201,967.31 × 72,203.59
  4. Step 4: Simplify right side
    134,605.99x = 14,582,764,844.64
  5. Step 5: Solve for x
    x = 14,582,764,844.64/134,605.99
  6. Step 6: Final answer
    x = 108,336.67

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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.