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Finding the Fourth Proportional to 159,334.48, 219,880.74 and 87,712.66

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Solution

The fourth proportional to 159,334.48, 219,880.74 and 87,712.66 is: 121,043.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,334.48 : 219,880.74 = 87,712.66 : x
  2. Step 2: Convert to fraction form
    159,334.48/219,880.74 = 87,712.66/x
  3. Step 3: Cross multiply
    159,334.48x = 219,880.74 × 87,712.66
  4. Step 4: Simplify right side
    159,334.48x = 19,286,324,588.17
  5. Step 5: Solve for x
    x = 19,286,324,588.17/159,334.48
  6. Step 6: Final answer
    x = 121,043.01

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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.