Home / 161,431.65-242,147.73-77,172.03

Finding the Fourth Proportional to 161,431.65, 242,147.73 and 77,172.03

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Solution

The fourth proportional to 161,431.65, 242,147.73 and 77,172.03 is: 115,758.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,431.65 : 242,147.73 = 77,172.03 : x
  2. Step 2: Convert to fraction form
    161,431.65/242,147.73 = 77,172.03/x
  3. Step 3: Cross multiply
    161,431.65x = 242,147.73 × 77,172.03
  4. Step 4: Simplify right side
    161,431.65x = 18,687,031,883.99
  5. Step 5: Solve for x
    x = 18,687,031,883.99/161,431.65
  6. Step 6: Final answer
    x = 115,758.17

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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.