Home / 128,071.23-192,162.24-49,167.12

Finding the Fourth Proportional to 128,071.23, 192,162.24 and 49,167.12

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Solution

The fourth proportional to 128,071.23, 192,162.24 and 49,167.12 is: 73,771.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,071.23 : 192,162.24 = 49,167.12 : x
  2. Step 2: Convert to fraction form
    128,071.23/192,162.24 = 49,167.12/x
  3. Step 3: Cross multiply
    128,071.23x = 192,162.24 × 49,167.12
  4. Step 4: Simplify right side
    128,071.23x = 9,448,063,913.55
  5. Step 5: Solve for x
    x = 9,448,063,913.55/128,071.23
  6. Step 6: Final answer
    x = 73,771.95

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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.