Home / 120,728.72-166,603.24-67,014.40

Finding the Fourth Proportional to 120,728.72, 166,603.24 and 67,014.40

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Solution

The fourth proportional to 120,728.72, 166,603.24 and 67,014.40 is: 92,478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,728.72 : 166,603.24 = 67,014.40 : x
  2. Step 2: Convert to fraction form
    120,728.72/166,603.24 = 67,014.40/x
  3. Step 3: Cross multiply
    120,728.72x = 166,603.24 × 67,014.40
  4. Step 4: Simplify right side
    120,728.72x = 11,164,816,166.66
  5. Step 5: Solve for x
    x = 11,164,816,166.66/120,728.72
  6. Step 6: Final answer
    x = 92,478.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.