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Finding the Fourth Proportional to 146,745.80, 220,118.70 and 53,239.40

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Solution

The fourth proportional to 146,745.80, 220,118.70 and 53,239.40 is: 79,859.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,745.80 : 220,118.70 = 53,239.40 : x
  2. Step 2: Convert to fraction form
    146,745.80/220,118.70 = 53,239.40/x
  3. Step 3: Cross multiply
    146,745.80x = 220,118.70 × 53,239.40
  4. Step 4: Simplify right side
    146,745.80x = 11,718,987,516.78
  5. Step 5: Solve for x
    x = 11,718,987,516.78/146,745.80
  6. Step 6: Final answer
    x = 79,859.10

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1.5x scale

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.