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Finding the Fourth Proportional to 159,529.86, 220,143.24 and 87,898.32

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Solution

The fourth proportional to 159,529.86, 220,143.24 and 87,898.32 is: 121,295.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,529.86 : 220,143.24 = 87,898.32 : x
  2. Step 2: Convert to fraction form
    159,529.86/220,143.24 = 87,898.32/x
  3. Step 3: Cross multiply
    159,529.86x = 220,143.24 × 87,898.32
  4. Step 4: Simplify right side
    159,529.86x = 19,350,220,955.36
  5. Step 5: Solve for x
    x = 19,350,220,955.36/159,529.86
  6. Step 6: Final answer
    x = 121,295.29

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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.