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Finding the Fourth Proportional to 169,284.21, 253,707.62 and 80,564.91

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Solution

The fourth proportional to 169,284.21, 253,707.62 and 80,564.91 is: 120,743.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,284.21 : 253,707.62 = 80,564.91 : x
  2. Step 2: Convert to fraction form
    169,284.21/253,707.62 = 80,564.91/x
  3. Step 3: Cross multiply
    169,284.21x = 253,707.62 × 80,564.91
  4. Step 4: Simplify right side
    169,284.21x = 20,439,931,168.79
  5. Step 5: Solve for x
    x = 20,439,931,168.79/169,284.21
  6. Step 6: Final answer
    x = 120,743.28

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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.