Home / 128,112.48-192,064.84-53,288.60

Finding the Fourth Proportional to 128,112.48, 192,064.84 and 53,288.60

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Solution

The fourth proportional to 128,112.48, 192,064.84 and 53,288.60 is: 79,889.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,112.48 : 192,064.84 = 53,288.60 : x
  2. Step 2: Convert to fraction form
    128,112.48/192,064.84 = 53,288.60/x
  3. Step 3: Cross multiply
    128,112.48x = 192,064.84 × 53,288.60
  4. Step 4: Simplify right side
    128,112.48x = 10,234,866,432.82
  5. Step 5: Solve for x
    x = 10,234,866,432.82/128,112.48
  6. Step 6: Final answer
    x = 79,889.69

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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.