Home / 106,533.25-159,647.63-78,231.31

Finding the Fourth Proportional to 106,533.25, 159,647.63 and 78,231.31

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Solution

The fourth proportional to 106,533.25, 159,647.63 and 78,231.31 is: 117,235.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,533.25 : 159,647.63 = 78,231.31 : x
  2. Step 2: Convert to fraction form
    106,533.25/159,647.63 = 78,231.31/x
  3. Step 3: Cross multiply
    106,533.25x = 159,647.63 × 78,231.31
  4. Step 4: Simplify right side
    106,533.25x = 12,489,442,443.02
  5. Step 5: Solve for x
    x = 12,489,442,443.02/106,533.25
  6. Step 6: Final answer
    x = 117,235.16

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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.