Home / 137,081.20-189,172.56-79,734.28

Finding the Fourth Proportional to 137,081.20, 189,172.56 and 79,734.28

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Solution

The fourth proportional to 137,081.20, 189,172.56 and 79,734.28 is: 110,033.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,081.20 : 189,172.56 = 79,734.28 : x
  2. Step 2: Convert to fraction form
    137,081.20/189,172.56 = 79,734.28/x
  3. Step 3: Cross multiply
    137,081.20x = 189,172.56 × 79,734.28
  4. Step 4: Simplify right side
    137,081.20x = 15,083,537,867.36
  5. Step 5: Solve for x
    x = 15,083,537,867.36/137,081.20
  6. Step 6: Final answer
    x = 110,033.60

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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.