Home / 120,132.01-165,785.64-66,420.50

Finding the Fourth Proportional to 120,132.01, 165,785.64 and 66,420.50

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Solution

The fourth proportional to 120,132.01, 165,785.64 and 66,420.50 is: 91,662.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,132.01 : 165,785.64 = 66,420.50 : x
  2. Step 2: Convert to fraction form
    120,132.01/165,785.64 = 66,420.50/x
  3. Step 3: Cross multiply
    120,132.01x = 165,785.64 × 66,420.50
  4. Step 4: Simplify right side
    120,132.01x = 11,011,565,101.62
  5. Step 5: Solve for x
    x = 11,011,565,101.62/120,132.01
  6. Step 6: Final answer
    x = 91,662.21

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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.