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Finding the Fourth Proportional to 115,283.76, 159,091.87 and 64,299.79

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Solution

The fourth proportional to 115,283.76, 159,091.87 and 64,299.79 is: 88,733.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,283.76 : 159,091.87 = 64,299.79 : x
  2. Step 2: Convert to fraction form
    115,283.76/159,091.87 = 64,299.79/x
  3. Step 3: Cross multiply
    115,283.76x = 159,091.87 × 64,299.79
  4. Step 4: Simplify right side
    115,283.76x = 10,229,573,831.71
  5. Step 5: Solve for x
    x = 10,229,573,831.71/115,283.76
  6. Step 6: Final answer
    x = 88,733.87

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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.