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Finding the Fourth Proportional to 169,491.40, 254,140.76 and 131,009.32

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Solution

The fourth proportional to 169,491.40, 254,140.76 and 131,009.32 is: 196,439.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,491.40 : 254,140.76 = 131,009.32 : x
  2. Step 2: Convert to fraction form
    169,491.40/254,140.76 = 131,009.32/x
  3. Step 3: Cross multiply
    169,491.40x = 254,140.76 × 131,009.32
  4. Step 4: Simplify right side
    169,491.40x = 33,294,808,151.88
  5. Step 5: Solve for x
    x = 33,294,808,151.88/169,491.40
  6. Step 6: Final answer
    x = 196,439.51

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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.