Home / 115,149.40-158,903.78-64,161.92

Finding the Fourth Proportional to 115,149.40, 158,903.78 and 64,161.92

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Solution

The fourth proportional to 115,149.40, 158,903.78 and 64,161.92 is: 88,542.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,149.40 : 158,903.78 = 64,161.92 : x
  2. Step 2: Convert to fraction form
    115,149.40/158,903.78 = 64,161.92/x
  3. Step 3: Cross multiply
    115,149.40x = 158,903.78 × 64,161.92
  4. Step 4: Simplify right side
    115,149.40x = 10,195,571,696.51
  5. Step 5: Solve for x
    x = 10,195,571,696.51/115,149.40
  6. Step 6: Final answer
    x = 88,542.12

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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.