Home / 131,724.80-197,587.20-84,485.60

Finding the Fourth Proportional to 131,724.80, 197,587.20 and 84,485.60

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Solution

The fourth proportional to 131,724.80, 197,587.20 and 84,485.60 is: 126,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,724.80 : 197,587.20 = 84,485.60 : x
  2. Step 2: Convert to fraction form
    131,724.80/197,587.20 = 84,485.60/x
  3. Step 3: Cross multiply
    131,724.80x = 197,587.20 × 84,485.60
  4. Step 4: Simplify right side
    131,724.80x = 16,693,273,144.32
  5. Step 5: Solve for x
    x = 16,693,273,144.32/131,724.80
  6. Step 6: Final answer
    x = 126,728.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.