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Finding the Fourth Proportional to 500,716.81, 751,075.76 and 126,739.81

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Solution

The fourth proportional to 500,716.81, 751,075.76 and 126,739.81 is: 190,109.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,716.81 : 751,075.76 = 126,739.81 : x
  2. Step 2: Convert to fraction form
    500,716.81/751,075.76 = 126,739.81/x
  3. Step 3: Cross multiply
    500,716.81x = 751,075.76 × 126,739.81
  4. Step 4: Simplify right side
    500,716.81x = 95,191,199,118.01
  5. Step 5: Solve for x
    x = 95,191,199,118.01/500,716.81
  6. Step 6: Final answer
    x = 190,109.85

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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.