Home / 128,336.78-192,538.02-53,432.03

Finding the Fourth Proportional to 128,336.78, 192,538.02 and 53,432.03

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Solution

The fourth proportional to 128,336.78, 192,538.02 and 53,432.03 is: 80,161.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,336.78 : 192,538.02 = 53,432.03 : x
  2. Step 2: Convert to fraction form
    128,336.78/192,538.02 = 53,432.03/x
  3. Step 3: Cross multiply
    128,336.78x = 192,538.02 × 53,432.03
  4. Step 4: Simplify right side
    128,336.78x = 10,287,697,260.78
  5. Step 5: Solve for x
    x = 10,287,697,260.78/128,336.78
  6. Step 6: Final answer
    x = 80,161.72

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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.