Home / 128,239.45-192,359.18-34,745.20

Finding the Fourth Proportional to 128,239.45, 192,359.18 and 34,745.20

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Solution

The fourth proportional to 128,239.45, 192,359.18 and 34,745.20 is: 52,117.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,239.45 : 192,359.18 = 34,745.20 : x
  2. Step 2: Convert to fraction form
    128,239.45/192,359.18 = 34,745.20/x
  3. Step 3: Cross multiply
    128,239.45x = 192,359.18 × 34,745.20
  4. Step 4: Simplify right side
    128,239.45x = 6,683,558,771.20
  5. Step 5: Solve for x
    x = 6,683,558,771.20/128,239.45
  6. Step 6: Final answer
    x = 52,117.80

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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.