Home / 103,949.84-143,301.48-74,090

Finding the Fourth Proportional to 103,949.84, 143,301.48 and 74,090

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Solution

The fourth proportional to 103,949.84, 143,301.48 and 74,090 is: 102,137.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,949.84 : 143,301.48 = 74,090 : x
  2. Step 2: Convert to fraction form
    103,949.84/143,301.48 = 74,090/x
  3. Step 3: Cross multiply
    103,949.84x = 143,301.48 × 74,090
  4. Step 4: Simplify right side
    103,949.84x = 10,617,206,653.20
  5. Step 5: Solve for x
    x = 10,617,206,653.20/103,949.84
  6. Step 6: Final answer
    x = 102,137.79

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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.