Home / 131,465.20-197,197.80-81,382.90

Finding the Fourth Proportional to 131,465.20, 197,197.80 and 81,382.90

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Solution

The fourth proportional to 131,465.20, 197,197.80 and 81,382.90 is: 122,074.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,465.20 : 197,197.80 = 81,382.90 : x
  2. Step 2: Convert to fraction form
    131,465.20/197,197.80 = 81,382.90/x
  3. Step 3: Cross multiply
    131,465.20x = 197,197.80 × 81,382.90
  4. Step 4: Simplify right side
    131,465.20x = 16,048,528,837.62
  5. Step 5: Solve for x
    x = 16,048,528,837.62/131,465.20
  6. Step 6: Final answer
    x = 122,074.35

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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.