Home / 143,021.58-197,287.75-89,213.15

Finding the Fourth Proportional to 143,021.58, 197,287.75 and 89,213.15

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Solution

The fourth proportional to 143,021.58, 197,287.75 and 89,213.15 is: 123,062.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,021.58 : 197,287.75 = 89,213.15 : x
  2. Step 2: Convert to fraction form
    143,021.58/197,287.75 = 89,213.15/x
  3. Step 3: Cross multiply
    143,021.58x = 197,287.75 × 89,213.15
  4. Step 4: Simplify right side
    143,021.58x = 17,600,661,633.91
  5. Step 5: Solve for x
    x = 17,600,661,633.91/143,021.58
  6. Step 6: Final answer
    x = 123,062.98

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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.