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Finding the Fourth Proportional to 143,497.86, 198,027.04 and 79,835.64

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Solution

The fourth proportional to 143,497.86, 198,027.04 and 79,835.64 is: 110,173.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,497.86 : 198,027.04 = 79,835.64 : x
  2. Step 2: Convert to fraction form
    143,497.86/198,027.04 = 79,835.64/x
  3. Step 3: Cross multiply
    143,497.86x = 198,027.04 × 79,835.64
  4. Step 4: Simplify right side
    143,497.86x = 15,809,615,475.71
  5. Step 5: Solve for x
    x = 15,809,615,475.71/143,497.86
  6. Step 6: Final answer
    x = 110,173.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.