Home / 143,289.87-197,678.67-89,481.48

Finding the Fourth Proportional to 143,289.87, 197,678.67 and 89,481.48

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Solution

The fourth proportional to 143,289.87, 197,678.67 and 89,481.48 is: 123,446.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,289.87 : 197,678.67 = 89,481.48 : x
  2. Step 2: Convert to fraction form
    143,289.87/197,678.67 = 89,481.48/x
  3. Step 3: Cross multiply
    143,289.87x = 197,678.67 × 89,481.48
  4. Step 4: Simplify right side
    143,289.87x = 17,688,579,956.03
  5. Step 5: Solve for x
    x = 17,688,579,956.03/143,289.87
  6. Step 6: Final answer
    x = 123,446.13

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1.5x scale

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.