Home / 120,132.37-165,779.43-66,419.65

Finding the Fourth Proportional to 120,132.37, 165,779.43 and 66,419.65

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Solution

The fourth proportional to 120,132.37, 165,779.43 and 66,419.65 is: 91,657.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,132.37 : 165,779.43 = 66,419.65 : x
  2. Step 2: Convert to fraction form
    120,132.37/165,779.43 = 66,419.65/x
  3. Step 3: Cross multiply
    120,132.37x = 165,779.43 × 66,419.65
  4. Step 4: Simplify right side
    120,132.37x = 11,011,011,717.80
  5. Step 5: Solve for x
    x = 11,011,011,717.80/120,132.37
  6. Step 6: Final answer
    x = 91,657.33

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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.