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Finding the Fourth Proportional to 120,670.60, 180,890.70 and 94,001.80

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Solution

The fourth proportional to 120,670.60, 180,890.70 and 94,001.80 is: 140,912.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,670.60 : 180,890.70 = 94,001.80 : x
  2. Step 2: Convert to fraction form
    120,670.60/180,890.70 = 94,001.80/x
  3. Step 3: Cross multiply
    120,670.60x = 180,890.70 × 94,001.80
  4. Step 4: Simplify right side
    120,670.60x = 17,004,051,403.26
  5. Step 5: Solve for x
    x = 17,004,051,403.26/120,670.60
  6. Step 6: Final answer
    x = 140,912.96

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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.