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Finding the Fourth Proportional to 148,281.56, 204,628.56 and 81,213.56

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Solution

The fourth proportional to 148,281.56, 204,628.56 and 81,213.56 is: 112,074.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,281.56 : 204,628.56 = 81,213.56 : x
  2. Step 2: Convert to fraction form
    148,281.56/204,628.56 = 81,213.56/x
  3. Step 3: Cross multiply
    148,281.56x = 204,628.56 × 81,213.56
  4. Step 4: Simplify right side
    148,281.56x = 16,618,613,835.27
  5. Step 5: Solve for x
    x = 16,618,613,835.27/148,281.56
  6. Step 6: Final answer
    x = 112,074.72

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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.