Home / 136,730.52-188,637.66-80,121.24

Finding the Fourth Proportional to 136,730.52, 188,637.66 and 80,121.24

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Solution

The fourth proportional to 136,730.52, 188,637.66 and 80,121.24 is: 110,537.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,730.52 : 188,637.66 = 80,121.24 : x
  2. Step 2: Convert to fraction form
    136,730.52/188,637.66 = 80,121.24/x
  3. Step 3: Cross multiply
    136,730.52x = 188,637.66 × 80,121.24
  4. Step 4: Simplify right side
    136,730.52x = 15,113,883,229.90
  5. Step 5: Solve for x
    x = 15,113,883,229.90/136,730.52
  6. Step 6: Final answer
    x = 110,537.74

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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.