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Finding the Fourth Proportional to 159,378.18, 219,946.73 and 87,760.77

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Solution

The fourth proportional to 159,378.18, 219,946.73 and 87,760.77 is: 121,112.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,378.18 : 219,946.73 = 87,760.77 : x
  2. Step 2: Convert to fraction form
    159,378.18/219,946.73 = 87,760.77/x
  3. Step 3: Cross multiply
    159,378.18x = 219,946.73 × 87,760.77
  4. Step 4: Simplify right side
    159,378.18x = 19,302,694,383.78
  5. Step 5: Solve for x
    x = 19,302,694,383.78/159,378.18
  6. Step 6: Final answer
    x = 121,112.53

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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.