Home / 137,480.16-189,713.60-80,880.64

Finding the Fourth Proportional to 137,480.16, 189,713.60 and 80,880.64

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Solution

The fourth proportional to 137,480.16, 189,713.60 and 80,880.64 is: 111,609.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,480.16 : 189,713.60 = 80,880.64 : x
  2. Step 2: Convert to fraction form
    137,480.16/189,713.60 = 80,880.64/x
  3. Step 3: Cross multiply
    137,480.16x = 189,713.60 × 80,880.64
  4. Step 4: Simplify right side
    137,480.16x = 15,344,157,384.70
  5. Step 5: Solve for x
    x = 15,344,157,384.70/137,480.16
  6. Step 6: Final answer
    x = 111,609.98

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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.