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Finding the Fourth Proportional to 120,777.40, 181,197.42 and 45,898.84

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Solution

The fourth proportional to 120,777.40, 181,197.42 and 45,898.84 is: 68,860.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,777.40 : 181,197.42 = 45,898.84 : x
  2. Step 2: Convert to fraction form
    120,777.40/181,197.42 = 45,898.84/x
  3. Step 3: Cross multiply
    120,777.40x = 181,197.42 × 45,898.84
  4. Step 4: Simplify right side
    120,777.40x = 8,316,751,388.99
  5. Step 5: Solve for x
    x = 8,316,751,388.99/120,777.40
  6. Step 6: Final answer
    x = 68,860.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.