Home / 86,928.26-130,158.78-55,166.36

Finding the Fourth Proportional to 86,928.26, 130,158.78 and 55,166.36

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Solution

The fourth proportional to 86,928.26, 130,158.78 and 55,166.36 is: 82,601.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,928.26 : 130,158.78 = 55,166.36 : x
  2. Step 2: Convert to fraction form
    86,928.26/130,158.78 = 55,166.36/x
  3. Step 3: Cross multiply
    86,928.26x = 130,158.78 × 55,166.36
  4. Step 4: Simplify right side
    86,928.26x = 7,180,386,114.64
  5. Step 5: Solve for x
    x = 7,180,386,114.64/86,928.26
  6. Step 6: Final answer
    x = 82,601.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.