Home / 143,018.93-197,370.61-79,362.65

Finding the Fourth Proportional to 143,018.93, 197,370.61 and 79,362.65

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Solution

The fourth proportional to 143,018.93, 197,370.61 and 79,362.65 is: 109,522.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,018.93 : 197,370.61 = 79,362.65 : x
  2. Step 2: Convert to fraction form
    143,018.93/197,370.61 = 79,362.65/x
  3. Step 3: Cross multiply
    143,018.93x = 197,370.61 × 79,362.65
  4. Step 4: Simplify right side
    143,018.93x = 15,663,854,936.74
  5. Step 5: Solve for x
    x = 15,663,854,936.74/143,018.93
  6. Step 6: Final answer
    x = 109,522.95

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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.