Home / 115,956.72-160,021.08-64,971.36

Finding the Fourth Proportional to 115,956.72, 160,021.08 and 64,971.36

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Solution

The fourth proportional to 115,956.72, 160,021.08 and 64,971.36 is: 89,660.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,956.72 : 160,021.08 = 64,971.36 : x
  2. Step 2: Convert to fraction form
    115,956.72/160,021.08 = 64,971.36/x
  3. Step 3: Cross multiply
    115,956.72x = 160,021.08 × 64,971.36
  4. Step 4: Simplify right side
    115,956.72x = 10,396,787,196.27
  5. Step 5: Solve for x
    x = 10,396,787,196.27/115,956.72
  6. Step 6: Final answer
    x = 89,660.93

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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.