Home / 107,530.40-161,295.60-82,647.20

Finding the Fourth Proportional to 107,530.40, 161,295.60 and 82,647.20

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Solution

The fourth proportional to 107,530.40, 161,295.60 and 82,647.20 is: 123,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,530.40 : 161,295.60 = 82,647.20 : x
  2. Step 2: Convert to fraction form
    107,530.40/161,295.60 = 82,647.20/x
  3. Step 3: Cross multiply
    107,530.40x = 161,295.60 × 82,647.20
  4. Step 4: Simplify right side
    107,530.40x = 13,330,629,712.32
  5. Step 5: Solve for x
    x = 13,330,629,712.32/107,530.40
  6. Step 6: Final answer
    x = 123,970.80

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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.