Home / 120,210.45-165,893.37-66,496.50

Finding the Fourth Proportional to 120,210.45, 165,893.37 and 66,496.50

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Solution

The fourth proportional to 120,210.45, 165,893.37 and 66,496.50 is: 91,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,210.45 : 165,893.37 = 66,496.50 : x
  2. Step 2: Convert to fraction form
    120,210.45/165,893.37 = 66,496.50/x
  3. Step 3: Cross multiply
    120,210.45x = 165,893.37 × 66,496.50
  4. Step 4: Simplify right side
    120,210.45x = 11,031,328,478.21
  5. Step 5: Solve for x
    x = 11,031,328,478.21/120,210.45
  6. Step 6: Final answer
    x = 91,766.80

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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.