Home / 103,006.36-142,137.03-57,678.04

Finding the Fourth Proportional to 103,006.36, 142,137.03 and 57,678.04

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Solution

The fourth proportional to 103,006.36, 142,137.03 and 57,678.04 is: 79,589.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,006.36 : 142,137.03 = 57,678.04 : x
  2. Step 2: Convert to fraction form
    103,006.36/142,137.03 = 57,678.04/x
  3. Step 3: Cross multiply
    103,006.36x = 142,137.03 × 57,678.04
  4. Step 4: Simplify right side
    103,006.36x = 8,198,185,301.82
  5. Step 5: Solve for x
    x = 8,198,185,301.82/103,006.36
  6. Step 6: Final answer
    x = 79,589.12

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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.