Home / 123,231.99-170,060-66,643.37

Finding the Fourth Proportional to 123,231.99, 170,060 and 66,643.37

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Solution

The fourth proportional to 123,231.99, 170,060 and 66,643.37 is: 91,967.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,231.99 : 170,060 = 66,643.37 : x
  2. Step 2: Convert to fraction form
    123,231.99/170,060 = 66,643.37/x
  3. Step 3: Cross multiply
    123,231.99x = 170,060 × 66,643.37
  4. Step 4: Simplify right side
    123,231.99x = 11,333,371,502.20
  5. Step 5: Solve for x
    x = 11,333,371,502.20/123,231.99
  6. Step 6: Final answer
    x = 91,967.77

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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.