Home / 120,126.30-165,771.81-66,413.58

Finding the Fourth Proportional to 120,126.30, 165,771.81 and 66,413.58

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Solution

The fourth proportional to 120,126.30, 165,771.81 and 66,413.58 is: 91,649.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,126.30 : 165,771.81 = 66,413.58 : x
  2. Step 2: Convert to fraction form
    120,126.30/165,771.81 = 66,413.58/x
  3. Step 3: Cross multiply
    120,126.30x = 165,771.81 × 66,413.58
  4. Step 4: Simplify right side
    120,126.30x = 11,009,499,365.18
  5. Step 5: Solve for x
    x = 11,009,499,365.18/120,126.30
  6. Step 6: Final answer
    x = 91,649.37

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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.