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Finding the Fourth Proportional to 159,163.60, 219,649.92 and 87,545.50

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Solution

The fourth proportional to 159,163.60, 219,649.92 and 87,545.50 is: 120,815.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,163.60 : 219,649.92 = 87,545.50 : x
  2. Step 2: Convert to fraction form
    159,163.60/219,649.92 = 87,545.50/x
  3. Step 3: Cross multiply
    159,163.60x = 219,649.92 × 87,545.50
  4. Step 4: Simplify right side
    159,163.60x = 19,229,362,071.36
  5. Step 5: Solve for x
    x = 19,229,362,071.36/159,163.60
  6. Step 6: Final answer
    x = 120,815.07

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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.