Home / 105,633.63-158,343.77-66,218.37

Finding the Fourth Proportional to 105,633.63, 158,343.77 and 66,218.37

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Solution

The fourth proportional to 105,633.63, 158,343.77 and 66,218.37 is: 99,260.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,633.63 : 158,343.77 = 66,218.37 : x
  2. Step 2: Convert to fraction form
    105,633.63/158,343.77 = 66,218.37/x
  3. Step 3: Cross multiply
    105,633.63x = 158,343.77 × 66,218.37
  4. Step 4: Simplify right side
    105,633.63x = 10,485,266,017.96
  5. Step 5: Solve for x
    x = 10,485,266,017.96/105,633.63
  6. Step 6: Final answer
    x = 99,260.68

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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.