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Finding the Fourth Proportional to 146,634.48, 219,944.43 and 85,878.90

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Solution

The fourth proportional to 146,634.48, 219,944.43 and 85,878.90 is: 128,814.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,634.48 : 219,944.43 = 85,878.90 : x
  2. Step 2: Convert to fraction form
    146,634.48/219,944.43 = 85,878.90/x
  3. Step 3: Cross multiply
    146,634.48x = 219,944.43 × 85,878.90
  4. Step 4: Simplify right side
    146,634.48x = 18,888,585,709.53
  5. Step 5: Solve for x
    x = 18,888,585,709.53/146,634.48
  6. Step 6: Final answer
    x = 128,814.08

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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.