Home / 115,864.56-159,890.04-68,106.96

Finding the Fourth Proportional to 115,864.56, 159,890.04 and 68,106.96

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Solution

The fourth proportional to 115,864.56, 159,890.04 and 68,106.96 is: 93,985.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,864.56 : 159,890.04 = 68,106.96 : x
  2. Step 2: Convert to fraction form
    115,864.56/159,890.04 = 68,106.96/x
  3. Step 3: Cross multiply
    115,864.56x = 159,890.04 × 68,106.96
  4. Step 4: Simplify right side
    115,864.56x = 10,889,624,558.68
  5. Step 5: Solve for x
    x = 10,889,624,558.68/115,864.56
  6. Step 6: Final answer
    x = 93,985.81

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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.