Home / 120,131.74-165,773.06-66,417.40

Finding the Fourth Proportional to 120,131.74, 165,773.06 and 66,417.40

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Solution

The fourth proportional to 120,131.74, 165,773.06 and 66,417.40 is: 91,651.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,131.74 : 165,773.06 = 66,417.40 : x
  2. Step 2: Convert to fraction form
    120,131.74/165,773.06 = 66,417.40/x
  3. Step 3: Cross multiply
    120,131.74x = 165,773.06 × 66,417.40
  4. Step 4: Simplify right side
    120,131.74x = 11,010,214,806.38
  5. Step 5: Solve for x
    x = 11,010,214,806.38/120,131.74
  6. Step 6: Final answer
    x = 91,651.18

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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.