Home / 121,979.20-183,406.20-102,733.60

Finding the Fourth Proportional to 121,979.20, 183,406.20 and 102,733.60

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Solution

The fourth proportional to 121,979.20, 183,406.20 and 102,733.60 is: 154,468.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,979.20 : 183,406.20 = 102,733.60 : x
  2. Step 2: Convert to fraction form
    121,979.20/183,406.20 = 102,733.60/x
  3. Step 3: Cross multiply
    121,979.20x = 183,406.20 × 102,733.60
  4. Step 4: Simplify right side
    121,979.20x = 18,841,979,188.32
  5. Step 5: Solve for x
    x = 18,841,979,188.32/121,979.20
  6. Step 6: Final answer
    x = 154,468.79

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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.