Home / 120,218.08-165,897.84-66,501.60

Finding the Fourth Proportional to 120,218.08, 165,897.84 and 66,501.60

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Solution

The fourth proportional to 120,218.08, 165,897.84 and 66,501.60 is: 91,770.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,218.08 : 165,897.84 = 66,501.60 : x
  2. Step 2: Convert to fraction form
    120,218.08/165,897.84 = 66,501.60/x
  3. Step 3: Cross multiply
    120,218.08x = 165,897.84 × 66,501.60
  4. Step 4: Simplify right side
    120,218.08x = 11,032,471,796.54
  5. Step 5: Solve for x
    x = 11,032,471,796.54/120,218.08
  6. Step 6: Final answer
    x = 91,770.49

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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.