Home / 120,290,539.88-166,001,105.22-65,286,396.38

Finding the Fourth Proportional to 120,290,539.88, 166,001,105.22 and 65,286,396.38

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Solution

The fourth proportional to 120,290,539.88, 166,001,105.22 and 65,286,396.38 is: 90,095,313.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,290,539.88 : 166,001,105.22 = 65,286,396.38 : x
  2. Step 2: Convert to fraction form
    120,290,539.88/166,001,105.22 = 65,286,396.38/x
  3. Step 3: Cross multiply
    120,290,539.88x = 166,001,105.22 × 65,286,396.38
  4. Step 4: Simplify right side
    120,290,539.88x = 10,837,613,954,911,008
  5. Step 5: Solve for x
    x = 10,837,613,954,911,008/120,290,539.88
  6. Step 6: Final answer
    x = 90,095,313.94

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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.