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Finding the Fourth Proportional to 159,087.88, 219,542.74 and 87,468.36

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Solution

The fourth proportional to 159,087.88, 219,542.74 and 87,468.36 is: 120,707.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,087.88 : 219,542.74 = 87,468.36 : x
  2. Step 2: Convert to fraction form
    159,087.88/219,542.74 = 87,468.36/x
  3. Step 3: Cross multiply
    159,087.88x = 219,542.74 × 87,468.36
  4. Step 4: Simplify right side
    159,087.88x = 19,203,043,417.71
  5. Step 5: Solve for x
    x = 19,203,043,417.71/159,087.88
  6. Step 6: Final answer
    x = 120,707.14

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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.