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Finding the Fourth Proportional to 120,672.45, 180,768.11 and 94,253.49

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Solution

The fourth proportional to 120,672.45, 180,768.11 and 94,253.49 is: 141,192.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,672.45 : 180,768.11 = 94,253.49 : x
  2. Step 2: Convert to fraction form
    120,672.45/180,768.11 = 94,253.49/x
  3. Step 3: Cross multiply
    120,672.45x = 180,768.11 × 94,253.49
  4. Step 4: Simplify right side
    120,672.45x = 17,038,024,776.94
  5. Step 5: Solve for x
    x = 17,038,024,776.94/120,672.45
  6. Step 6: Final answer
    x = 141,192.33

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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.