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Finding the Fourth Proportional to 100,642.45, 151,004.67 and 50,736.94

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Solution

The fourth proportional to 100,642.45, 151,004.67 and 50,736.94 is: 76,126.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,642.45 : 151,004.67 = 50,736.94 : x
  2. Step 2: Convert to fraction form
    100,642.45/151,004.67 = 50,736.94/x
  3. Step 3: Cross multiply
    100,642.45x = 151,004.67 × 50,736.94
  4. Step 4: Simplify right side
    100,642.45x = 7,661,514,881.51
  5. Step 5: Solve for x
    x = 7,661,514,881.51/100,642.45
  6. Step 6: Final answer
    x = 76,126.08

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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.