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Finding the Fourth Proportional to 144,572.40, 199,509.60 and 80,922.48

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Solution

The fourth proportional to 144,572.40, 199,509.60 and 80,922.48 is: 111,672.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,572.40 : 199,509.60 = 80,922.48 : x
  2. Step 2: Convert to fraction form
    144,572.40/199,509.60 = 80,922.48/x
  3. Step 3: Cross multiply
    144,572.40x = 199,509.60 × 80,922.48
  4. Step 4: Simplify right side
    144,572.40x = 16,144,811,615.81
  5. Step 5: Solve for x
    x = 16,144,811,615.81/144,572.40
  6. Step 6: Final answer
    x = 111,672.85

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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.