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Finding the Fourth Proportional to 120,246.42, 180,369.42 and 48,231.79

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Solution

The fourth proportional to 120,246.42, 180,369.42 and 48,231.79 is: 72,347.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,246.42 : 180,369.42 = 48,231.79 : x
  2. Step 2: Convert to fraction form
    120,246.42/180,369.42 = 48,231.79/x
  3. Step 3: Cross multiply
    120,246.42x = 180,369.42 × 48,231.79
  4. Step 4: Simplify right side
    120,246.42x = 8,699,539,987.86
  5. Step 5: Solve for x
    x = 8,699,539,987.86/120,246.42
  6. Step 6: Final answer
    x = 72,347.60

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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.