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Finding the Fourth Proportional to 115,792.77, 159,869.79 and 89,074.92

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Solution

The fourth proportional to 115,792.77, 159,869.79 and 89,074.92 is: 122,981.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,792.77 : 159,869.79 = 89,074.92 : x
  2. Step 2: Convert to fraction form
    115,792.77/159,869.79 = 89,074.92/x
  3. Step 3: Cross multiply
    115,792.77x = 159,869.79 × 89,074.92
  4. Step 4: Simplify right side
    115,792.77x = 14,240,388,754.67
  5. Step 5: Solve for x
    x = 14,240,388,754.67/115,792.77
  6. Step 6: Final answer
    x = 122,981.67

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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.