Home / 137,479.26-189,705.60-80,130.72

Finding the Fourth Proportional to 137,479.26, 189,705.60 and 80,130.72

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Solution

The fourth proportional to 137,479.26, 189,705.60 and 80,130.72 is: 110,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,479.26 : 189,705.60 = 80,130.72 : x
  2. Step 2: Convert to fraction form
    137,479.26/189,705.60 = 80,130.72/x
  3. Step 3: Cross multiply
    137,479.26x = 189,705.60 × 80,130.72
  4. Step 4: Simplify right side
    137,479.26x = 15,201,246,316.03
  5. Step 5: Solve for x
    x = 15,201,246,316.03/137,479.26
  6. Step 6: Final answer
    x = 110,571.20

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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.