Home / 120,213.45-165,897.51-66,499.50

Finding the Fourth Proportional to 120,213.45, 165,897.51 and 66,499.50

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Solution

The fourth proportional to 120,213.45, 165,897.51 and 66,499.50 is: 91,770.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,213.45 : 165,897.51 = 66,499.50 : x
  2. Step 2: Convert to fraction form
    120,213.45/165,897.51 = 66,499.50/x
  3. Step 3: Cross multiply
    120,213.45x = 165,897.51 × 66,499.50
  4. Step 4: Simplify right side
    120,213.45x = 11,032,101,466.25
  5. Step 5: Solve for x
    x = 11,032,101,466.25/120,213.45
  6. Step 6: Final answer
    x = 91,770.94

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1.5x scale

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.