Home / 102,689.08-141,696.90-57,361.28

Finding the Fourth Proportional to 102,689.08, 141,696.90 and 57,361.28

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Solution

The fourth proportional to 102,689.08, 141,696.90 and 57,361.28 is: 79,150.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,689.08 : 141,696.90 = 57,361.28 : x
  2. Step 2: Convert to fraction form
    102,689.08/141,696.90 = 57,361.28/x
  3. Step 3: Cross multiply
    102,689.08x = 141,696.90 × 57,361.28
  4. Step 4: Simplify right side
    102,689.08x = 8,127,915,556.03
  5. Step 5: Solve for x
    x = 8,127,915,556.03/102,689.08
  6. Step 6: Final answer
    x = 79,150.73

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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.