Home / 135,078.48-202,436.60-105,128.88

Finding the Fourth Proportional to 135,078.48, 202,436.60 and 105,128.88

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Solution

The fourth proportional to 135,078.48, 202,436.60 and 105,128.88 is: 157,552.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,078.48 : 202,436.60 = 105,128.88 : x
  2. Step 2: Convert to fraction form
    135,078.48/202,436.60 = 105,128.88/x
  3. Step 3: Cross multiply
    135,078.48x = 202,436.60 × 105,128.88
  4. Step 4: Simplify right side
    135,078.48x = 21,281,933,029.01
  5. Step 5: Solve for x
    x = 21,281,933,029.01/135,078.48
  6. Step 6: Final answer
    x = 157,552.36

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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.