Home / 143,485.20-197,956.08-89,749.80

Finding the Fourth Proportional to 143,485.20, 197,956.08 and 89,749.80

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Solution

The fourth proportional to 143,485.20, 197,956.08 and 89,749.80 is: 123,821.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,485.20 : 197,956.08 = 89,749.80 : x
  2. Step 2: Convert to fraction form
    143,485.20/197,956.08 = 89,749.80/x
  3. Step 3: Cross multiply
    143,485.20x = 197,956.08 × 89,749.80
  4. Step 4: Simplify right side
    143,485.20x = 17,766,518,588.78
  5. Step 5: Solve for x
    x = 17,766,518,588.78/143,485.20
  6. Step 6: Final answer
    x = 123,821.26

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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.