Home / 112,103.20-167,809.20-99,661.60

Finding the Fourth Proportional to 112,103.20, 167,809.20 and 99,661.60

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Solution

The fourth proportional to 112,103.20, 167,809.20 and 99,661.60 is: 149,185.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,103.20 : 167,809.20 = 99,661.60 : x
  2. Step 2: Convert to fraction form
    112,103.20/167,809.20 = 99,661.60/x
  3. Step 3: Cross multiply
    112,103.20x = 167,809.20 × 99,661.60
  4. Step 4: Simplify right side
    112,103.20x = 16,724,133,366.72
  5. Step 5: Solve for x
    x = 16,724,133,366.72/112,103.20
  6. Step 6: Final answer
    x = 149,185.16

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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.