Home / 136,724.32-188,684.40-80,132.32

Finding the Fourth Proportional to 136,724.32, 188,684.40 and 80,132.32

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Solution

The fourth proportional to 136,724.32, 188,684.40 and 80,132.32 is: 110,585.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,724.32 : 188,684.40 = 80,132.32 : x
  2. Step 2: Convert to fraction form
    136,724.32/188,684.40 = 80,132.32/x
  3. Step 3: Cross multiply
    136,724.32x = 188,684.40 × 80,132.32
  4. Step 4: Simplify right side
    136,724.32x = 15,119,718,719.81
  5. Step 5: Solve for x
    x = 15,119,718,719.81/136,724.32
  6. Step 6: Final answer
    x = 110,585.44

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1.5x scale

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.