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Finding the Fourth Proportional to 158,983.83, 219,394.98 and 87,363.77

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Solution

The fourth proportional to 158,983.83, 219,394.98 and 87,363.77 is: 120,560.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,983.83 : 219,394.98 = 87,363.77 : x
  2. Step 2: Convert to fraction form
    158,983.83/219,394.98 = 87,363.77/x
  3. Step 3: Cross multiply
    158,983.83x = 219,394.98 × 87,363.77
  4. Step 4: Simplify right side
    158,983.83x = 19,167,171,474.90
  5. Step 5: Solve for x
    x = 19,167,171,474.90/158,983.83
  6. Step 6: Final answer
    x = 120,560.51

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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.