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Finding the Fourth Proportional to 128,480.91, 192,670.32 and 49,544.79

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Solution

The fourth proportional to 128,480.91, 192,670.32 and 49,544.79 is: 74,297.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,480.91 : 192,670.32 = 49,544.79 : x
  2. Step 2: Convert to fraction form
    128,480.91/192,670.32 = 49,544.79/x
  3. Step 3: Cross multiply
    128,480.91x = 192,670.32 × 49,544.79
  4. Step 4: Simplify right side
    128,480.91x = 9,545,810,543.63
  5. Step 5: Solve for x
    x = 9,545,810,543.63/128,480.91
  6. Step 6: Final answer
    x = 74,297.50

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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.