Home / 120,125.57-165,765.15-66,403.33

Finding the Fourth Proportional to 120,125.57, 165,765.15 and 66,403.33

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Solution

The fourth proportional to 120,125.57, 165,765.15 and 66,403.33 is: 91,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,125.57 : 165,765.15 = 66,403.33 : x
  2. Step 2: Convert to fraction form
    120,125.57/165,765.15 = 66,403.33/x
  3. Step 3: Cross multiply
    120,125.57x = 165,765.15 × 66,403.33
  4. Step 4: Simplify right side
    120,125.57x = 11,007,357,543.54
  5. Step 5: Solve for x
    x = 11,007,357,543.54/120,125.57
  6. Step 6: Final answer
    x = 91,632.10

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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.