Home / 161,721.80-242,582.70-138,102.20

Finding the Fourth Proportional to 161,721.80, 242,582.70 and 138,102.20

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Solution

The fourth proportional to 161,721.80, 242,582.70 and 138,102.20 is: 207,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,721.80 : 242,582.70 = 138,102.20 : x
  2. Step 2: Convert to fraction form
    161,721.80/242,582.70 = 138,102.20/x
  3. Step 3: Cross multiply
    161,721.80x = 242,582.70 × 138,102.20
  4. Step 4: Simplify right side
    161,721.80x = 33,501,204,551.94
  5. Step 5: Solve for x
    x = 33,501,204,551.94/161,721.80
  6. Step 6: Final answer
    x = 207,153.30

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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.