Home / 149,200.64-205,899.53-81,219.56

Finding the Fourth Proportional to 149,200.64, 205,899.53 and 81,219.56

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Solution

The fourth proportional to 149,200.64, 205,899.53 and 81,219.56 is: 112,084.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,200.64 : 205,899.53 = 81,219.56 : x
  2. Step 2: Convert to fraction form
    149,200.64/205,899.53 = 81,219.56/x
  3. Step 3: Cross multiply
    149,200.64x = 205,899.53 × 81,219.56
  4. Step 4: Simplify right side
    149,200.64x = 16,723,069,339.46
  5. Step 5: Solve for x
    x = 16,723,069,339.46/149,200.64
  6. Step 6: Final answer
    x = 112,084.44

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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.