Home / 103,516.22-155,120.43-53,529.60

Finding the Fourth Proportional to 103,516.22, 155,120.43 and 53,529.60

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Solution

The fourth proportional to 103,516.22, 155,120.43 and 53,529.60 is: 80,214.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,516.22 : 155,120.43 = 53,529.60 : x
  2. Step 2: Convert to fraction form
    103,516.22/155,120.43 = 53,529.60/x
  3. Step 3: Cross multiply
    103,516.22x = 155,120.43 × 53,529.60
  4. Step 4: Simplify right side
    103,516.22x = 8,303,534,569.73
  5. Step 5: Solve for x
    x = 8,303,534,569.73/103,516.22
  6. Step 6: Final answer
    x = 80,214.82

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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.