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Finding the Fourth Proportional to 161,696.76, 223,111.92 and 90,075

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Solution

The fourth proportional to 161,696.76, 223,111.92 and 90,075 is: 124,287.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,696.76 : 223,111.92 = 90,075 : x
  2. Step 2: Convert to fraction form
    161,696.76/223,111.92 = 90,075/x
  3. Step 3: Cross multiply
    161,696.76x = 223,111.92 × 90,075
  4. Step 4: Simplify right side
    161,696.76x = 20,096,806,194
  5. Step 5: Solve for x
    x = 20,096,806,194/161,696.76
  6. Step 6: Final answer
    x = 124,287.01

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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.