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Finding the Fourth Proportional to 115,879.62, 159,922.62 and 64,889.76

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Solution

The fourth proportional to 115,879.62, 159,922.62 and 64,889.76 is: 89,552.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,879.62 : 159,922.62 = 64,889.76 : x
  2. Step 2: Convert to fraction form
    115,879.62/159,922.62 = 64,889.76/x
  3. Step 3: Cross multiply
    115,879.62x = 159,922.62 × 64,889.76
  4. Step 4: Simplify right side
    115,879.62x = 10,377,340,430.37
  5. Step 5: Solve for x
    x = 10,377,340,430.37/115,879.62
  6. Step 6: Final answer
    x = 89,552.77

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1.5x scale

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.