Home / 123,328.05-170,192.70-66,739.43

Finding the Fourth Proportional to 123,328.05, 170,192.70 and 66,739.43

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Solution

The fourth proportional to 123,328.05, 170,192.70 and 66,739.43 is: 92,100.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,328.05 : 170,192.70 = 66,739.43 : x
  2. Step 2: Convert to fraction form
    123,328.05/170,192.70 = 66,739.43/x
  3. Step 3: Cross multiply
    123,328.05x = 170,192.70 × 66,739.43
  4. Step 4: Simplify right side
    123,328.05x = 11,358,563,788.16
  5. Step 5: Solve for x
    x = 11,358,563,788.16/123,328.05
  6. Step 6: Final answer
    x = 92,100.41

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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.