Home / 103,640.20-143,048.82-67,916.68

Finding the Fourth Proportional to 103,640.20, 143,048.82 and 67,916.68

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Solution

The fourth proportional to 103,640.20, 143,048.82 and 67,916.68 is: 93,741.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.20 : 143,048.82 = 67,916.68 : x
  2. Step 2: Convert to fraction form
    103,640.20/143,048.82 = 67,916.68/x
  3. Step 3: Cross multiply
    103,640.20x = 143,048.82 × 67,916.68
  4. Step 4: Simplify right side
    103,640.20x = 9,715,400,932.32
  5. Step 5: Solve for x
    x = 9,715,400,932.32/103,640.20
  6. Step 6: Final answer
    x = 93,741.63

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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.