Home / 120,384.93-180,478.83-45,462.54

Finding the Fourth Proportional to 120,384.93, 180,478.83 and 45,462.54

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Solution

The fourth proportional to 120,384.93, 180,478.83 and 45,462.54 is: 68,156.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,384.93 : 180,478.83 = 45,462.54 : x
  2. Step 2: Convert to fraction form
    120,384.93/180,478.83 = 45,462.54/x
  3. Step 3: Cross multiply
    120,384.93x = 180,478.83 × 45,462.54
  4. Step 4: Simplify right side
    120,384.93x = 8,205,026,028.03
  5. Step 5: Solve for x
    x = 8,205,026,028.03/120,384.93
  6. Step 6: Final answer
    x = 68,156.59

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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.