Home / 120,119.55-165,752.29-66,395.89

Finding the Fourth Proportional to 120,119.55, 165,752.29 and 66,395.89

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Solution

The fourth proportional to 120,119.55, 165,752.29 and 66,395.89 is: 91,619.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,119.55 : 165,752.29 = 66,395.89 : x
  2. Step 2: Convert to fraction form
    120,119.55/165,752.29 = 66,395.89/x
  3. Step 3: Cross multiply
    120,119.55x = 165,752.29 × 66,395.89
  4. Step 4: Simplify right side
    120,119.55x = 11,005,270,814.09
  5. Step 5: Solve for x
    x = 11,005,270,814.09/120,119.55
  6. Step 6: Final answer
    x = 91,619.31

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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.