Home / 143,015.73-197,354.91-78,483.51

Finding the Fourth Proportional to 143,015.73, 197,354.91 and 78,483.51

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Solution

The fourth proportional to 143,015.73, 197,354.91 and 78,483.51 is: 108,303.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,015.73 : 197,354.91 = 78,483.51 : x
  2. Step 2: Convert to fraction form
    143,015.73/197,354.91 = 78,483.51/x
  3. Step 3: Cross multiply
    143,015.73x = 197,354.91 × 78,483.51
  4. Step 4: Simplify right side
    143,015.73x = 15,489,106,626.80
  5. Step 5: Solve for x
    x = 15,489,106,626.80/143,015.73
  6. Step 6: Final answer
    x = 108,303.52

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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.