Home / 189,719.72-261,810.02-103,676.80

Finding the Fourth Proportional to 189,719.72, 261,810.02 and 103,676.80

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Solution

The fourth proportional to 189,719.72, 261,810.02 and 103,676.80 is: 143,072.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,719.72 : 261,810.02 = 103,676.80 : x
  2. Step 2: Convert to fraction form
    189,719.72/261,810.02 = 103,676.80/x
  3. Step 3: Cross multiply
    189,719.72x = 261,810.02 × 103,676.80
  4. Step 4: Simplify right side
    189,719.72x = 27,143,625,081.54
  5. Step 5: Solve for x
    x = 27,143,625,081.54/189,719.72
  6. Step 6: Final answer
    x = 143,072.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.