Home / 128,222.20-192,292.26-42,814.72

Finding the Fourth Proportional to 128,222.20, 192,292.26 and 42,814.72

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Solution

The fourth proportional to 128,222.20, 192,292.26 and 42,814.72 is: 64,208.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,222.20 : 192,292.26 = 42,814.72 : x
  2. Step 2: Convert to fraction form
    128,222.20/192,292.26 = 42,814.72/x
  3. Step 3: Cross multiply
    128,222.20x = 192,292.26 × 42,814.72
  4. Step 4: Simplify right side
    128,222.20x = 8,232,939,270.07
  5. Step 5: Solve for x
    x = 8,232,939,270.07/128,222.20
  6. Step 6: Final answer
    x = 64,208.38

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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.