Home / 143,027.32-197,416-89,279.98

Finding the Fourth Proportional to 143,027.32, 197,416 and 89,279.98

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Solution

The fourth proportional to 143,027.32, 197,416 and 89,279.98 is: 123,230.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,027.32 : 197,416 = 89,279.98 : x
  2. Step 2: Convert to fraction form
    143,027.32/197,416 = 89,279.98/x
  3. Step 3: Cross multiply
    143,027.32x = 197,416 × 89,279.98
  4. Step 4: Simplify right side
    143,027.32x = 17,625,296,531.68
  5. Step 5: Solve for x
    x = 17,625,296,531.68/143,027.32
  6. Step 6: Final answer
    x = 123,230.28

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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.