Home / 143,539.98-197,879.86-100,966.38

Finding the Fourth Proportional to 143,539.98, 197,879.86 and 100,966.38

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Solution

The fourth proportional to 143,539.98, 197,879.86 and 100,966.38 is: 139,189.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,539.98 : 197,879.86 = 100,966.38 : x
  2. Step 2: Convert to fraction form
    143,539.98/197,879.86 = 100,966.38/x
  3. Step 3: Cross multiply
    143,539.98x = 197,879.86 × 100,966.38
  4. Step 4: Simplify right side
    143,539.98x = 19,979,213,139.11
  5. Step 5: Solve for x
    x = 19,979,213,139.11/143,539.98
  6. Step 6: Final answer
    x = 139,189.19

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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.