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Finding the Fourth Proportional to 143,262.75, 197,703.75 and 89,578.87

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Solution

The fourth proportional to 143,262.75, 197,703.75 and 89,578.87 is: 123,619.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,262.75 : 197,703.75 = 89,578.87 : x
  2. Step 2: Convert to fraction form
    143,262.75/197,703.75 = 89,578.87/x
  3. Step 3: Cross multiply
    143,262.75x = 197,703.75 × 89,578.87
  4. Step 4: Simplify right side
    143,262.75x = 17,710,078,519.76
  5. Step 5: Solve for x
    x = 17,710,078,519.76/143,262.75
  6. Step 6: Final answer
    x = 123,619.56

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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.