Home / 120,621.82-180,886.53-40,638.29

Finding the Fourth Proportional to 120,621.82, 180,886.53 and 40,638.29

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Solution

The fourth proportional to 120,621.82, 180,886.53 and 40,638.29 is: 60,941.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,621.82 : 180,886.53 = 40,638.29 : x
  2. Step 2: Convert to fraction form
    120,621.82/180,886.53 = 40,638.29/x
  3. Step 3: Cross multiply
    120,621.82x = 180,886.53 × 40,638.29
  4. Step 4: Simplify right side
    120,621.82x = 7,350,919,263.23
  5. Step 5: Solve for x
    x = 7,350,919,263.23/120,621.82
  6. Step 6: Final answer
    x = 60,941.87

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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.