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Finding the Fourth Proportional to 159,255.44, 219,777.72 and 87,640.64

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Solution

The fourth proportional to 159,255.44, 219,777.72 and 87,640.64 is: 120,946.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,255.44 : 219,777.72 = 87,640.64 : x
  2. Step 2: Convert to fraction form
    159,255.44/219,777.72 = 87,640.64/x
  3. Step 3: Cross multiply
    159,255.44x = 219,777.72 × 87,640.64
  4. Step 4: Simplify right side
    159,255.44x = 19,261,460,038.54
  5. Step 5: Solve for x
    x = 19,261,460,038.54/159,255.44
  6. Step 6: Final answer
    x = 120,946.95

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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.