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Finding the Fourth Proportional to 158,808.54, 219,156.18 and 87,193.17

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Solution

The fourth proportional to 158,808.54, 219,156.18 and 87,193.17 is: 120,326.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,808.54 : 219,156.18 = 87,193.17 : x
  2. Step 2: Convert to fraction form
    158,808.54/219,156.18 = 87,193.17/x
  3. Step 3: Cross multiply
    158,808.54x = 219,156.18 × 87,193.17
  4. Step 4: Simplify right side
    158,808.54x = 19,108,922,059.29
  5. Step 5: Solve for x
    x = 19,108,922,059.29/158,808.54
  6. Step 6: Final answer
    x = 120,326.79

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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.