Home / 215,611.88-323,060.28-131,116.45

Finding the Fourth Proportional to 215,611.88, 323,060.28 and 131,116.45

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Solution

The fourth proportional to 215,611.88, 323,060.28 and 131,116.45 is: 196,457.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,611.88 : 323,060.28 = 131,116.45 : x
  2. Step 2: Convert to fraction form
    215,611.88/323,060.28 = 131,116.45/x
  3. Step 3: Cross multiply
    215,611.88x = 323,060.28 × 131,116.45
  4. Step 4: Simplify right side
    215,611.88x = 42,358,517,049.61
  5. Step 5: Solve for x
    x = 42,358,517,049.61/215,611.88
  6. Step 6: Final answer
    x = 196,457.25

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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.