Home / 161,919.72-242,666.34-90,841

Finding the Fourth Proportional to 161,919.72, 242,666.34 and 90,841

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Solution

The fourth proportional to 161,919.72, 242,666.34 and 90,841 is: 136,141.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,919.72 : 242,666.34 = 90,841 : x
  2. Step 2: Convert to fraction form
    161,919.72/242,666.34 = 90,841/x
  3. Step 3: Cross multiply
    161,919.72x = 242,666.34 × 90,841
  4. Step 4: Simplify right side
    161,919.72x = 22,044,052,991.94
  5. Step 5: Solve for x
    x = 22,044,052,991.94/161,919.72
  6. Step 6: Final answer
    x = 136,141.87

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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.