Home / 120,120.36-165,765.24-66,404.40

Finding the Fourth Proportional to 120,120.36, 165,765.24 and 66,404.40

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Solution

The fourth proportional to 120,120.36, 165,765.24 and 66,404.40 is: 91,637.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,120.36 : 165,765.24 = 66,404.40 : x
  2. Step 2: Convert to fraction form
    120,120.36/165,765.24 = 66,404.40/x
  3. Step 3: Cross multiply
    120,120.36x = 165,765.24 × 66,404.40
  4. Step 4: Simplify right side
    120,120.36x = 11,007,541,303.06
  5. Step 5: Solve for x
    x = 11,007,541,303.06/120,120.36
  6. Step 6: Final answer
    x = 91,637.60

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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.