Home / 120,431.66-180,813.33-61,308.54

Finding the Fourth Proportional to 120,431.66, 180,813.33 and 61,308.54

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Solution

The fourth proportional to 120,431.66, 180,813.33 and 61,308.54 is: 92,047.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,431.66 : 180,813.33 = 61,308.54 : x
  2. Step 2: Convert to fraction form
    120,431.66/180,813.33 = 61,308.54/x
  3. Step 3: Cross multiply
    120,431.66x = 180,813.33 × 61,308.54
  4. Step 4: Simplify right side
    120,431.66x = 11,085,401,274.84
  5. Step 5: Solve for x
    x = 11,085,401,274.84/120,431.66
  6. Step 6: Final answer
    x = 92,047.24

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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.