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Finding the Fourth Proportional to 169,220.88, 253,831.92 and 42,861.06

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Solution

The fourth proportional to 169,220.88, 253,831.92 and 42,861.06 is: 64,291.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,220.88 : 253,831.92 = 42,861.06 : x
  2. Step 2: Convert to fraction form
    169,220.88/253,831.92 = 42,861.06/x
  3. Step 3: Cross multiply
    169,220.88x = 253,831.92 × 42,861.06
  4. Step 4: Simplify right side
    169,220.88x = 10,879,505,153.04
  5. Step 5: Solve for x
    x = 10,879,505,153.04/169,220.88
  6. Step 6: Final answer
    x = 64,291.74

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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.