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Finding the Fourth Proportional to 120,572.61, 180,888.93 and 36,330.90

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Solution

The fourth proportional to 120,572.61, 180,888.93 and 36,330.90 is: 54,505.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,572.61 : 180,888.93 = 36,330.90 : x
  2. Step 2: Convert to fraction form
    120,572.61/180,888.93 = 36,330.90/x
  3. Step 3: Cross multiply
    120,572.61x = 180,888.93 × 36,330.90
  4. Step 4: Simplify right side
    120,572.61x = 6,571,857,626.94
  5. Step 5: Solve for x
    x = 6,571,857,626.94/120,572.61
  6. Step 6: Final answer
    x = 54,505.39

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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.