Home / 120,729.61-180,983.55-41,788.63

Finding the Fourth Proportional to 120,729.61, 180,983.55 and 41,788.63

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Solution

The fourth proportional to 120,729.61, 180,983.55 and 41,788.63 is: 62,644.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,729.61 : 180,983.55 = 41,788.63 : x
  2. Step 2: Convert to fraction form
    120,729.61/180,983.55 = 41,788.63/x
  3. Step 3: Cross multiply
    120,729.61x = 180,983.55 × 41,788.63
  4. Step 4: Simplify right side
    120,729.61x = 7,563,054,398.09
  5. Step 5: Solve for x
    x = 7,563,054,398.09/120,729.61
  6. Step 6: Final answer
    x = 62,644.57

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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.