Home / 143,004.74-197,346-78,475.06

Finding the Fourth Proportional to 143,004.74, 197,346 and 78,475.06

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Solution

The fourth proportional to 143,004.74, 197,346 and 78,475.06 is: 108,295.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,004.74 : 197,346 = 78,475.06 : x
  2. Step 2: Convert to fraction form
    143,004.74/197,346 = 78,475.06/x
  3. Step 3: Cross multiply
    143,004.74x = 197,346 × 78,475.06
  4. Step 4: Simplify right side
    143,004.74x = 15,486,739,190.76
  5. Step 5: Solve for x
    x = 15,486,739,190.76/143,004.74
  6. Step 6: Final answer
    x = 108,295.29

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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.