Home / 128,929.75-193,399.49-40,182.91

Finding the Fourth Proportional to 128,929.75, 193,399.49 and 40,182.91

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Solution

The fourth proportional to 128,929.75, 193,399.49 and 40,182.91 is: 60,275.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,929.75 : 193,399.49 = 40,182.91 : x
  2. Step 2: Convert to fraction form
    128,929.75/193,399.49 = 40,182.91/x
  3. Step 3: Cross multiply
    128,929.75x = 193,399.49 × 40,182.91
  4. Step 4: Simplify right side
    128,929.75x = 7,771,354,300.72
  5. Step 5: Solve for x
    x = 7,771,354,300.72/128,929.75
  6. Step 6: Final answer
    x = 60,275.88

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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.