Home / 143,344.04-197,797.59-78,802.65

Finding the Fourth Proportional to 143,344.04, 197,797.59 and 78,802.65

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Solution

The fourth proportional to 143,344.04, 197,797.59 and 78,802.65 is: 108,738.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,344.04 : 197,797.59 = 78,802.65 : x
  2. Step 2: Convert to fraction form
    143,344.04/197,797.59 = 78,802.65/x
  3. Step 3: Cross multiply
    143,344.04x = 197,797.59 × 78,802.65
  4. Step 4: Simplify right side
    143,344.04x = 15,586,974,255.61
  5. Step 5: Solve for x
    x = 15,586,974,255.61/143,344.04
  6. Step 6: Final answer
    x = 108,738.21

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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.