Home / 103,669.34-143,195.72-79,321.95

Finding the Fourth Proportional to 103,669.34, 143,195.72 and 79,321.95

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Solution

The fourth proportional to 103,669.34, 143,195.72 and 79,321.95 is: 109,565.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,669.34 : 143,195.72 = 79,321.95 : x
  2. Step 2: Convert to fraction form
    103,669.34/143,195.72 = 79,321.95/x
  3. Step 3: Cross multiply
    103,669.34x = 143,195.72 × 79,321.95
  4. Step 4: Simplify right side
    103,669.34x = 11,358,563,345.44
  5. Step 5: Solve for x
    x = 11,358,563,345.44/103,669.34
  6. Step 6: Final answer
    x = 109,565.32

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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.