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Finding the Fourth Proportional to 147,653.70, 221,480.55 and 54,147.30

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Solution

The fourth proportional to 147,653.70, 221,480.55 and 54,147.30 is: 81,220.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,653.70 : 221,480.55 = 54,147.30 : x
  2. Step 2: Convert to fraction form
    147,653.70/221,480.55 = 54,147.30/x
  3. Step 3: Cross multiply
    147,653.70x = 221,480.55 × 54,147.30
  4. Step 4: Simplify right side
    147,653.70x = 11,992,573,785.02
  5. Step 5: Solve for x
    x = 11,992,573,785.02/147,653.70
  6. Step 6: Final answer
    x = 81,220.95

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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.