Home / 143,041.12-197,403.48-79,379.44

Finding the Fourth Proportional to 143,041.12, 197,403.48 and 79,379.44

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Solution

The fourth proportional to 143,041.12, 197,403.48 and 79,379.44 is: 109,547.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,041.12 : 197,403.48 = 79,379.44 : x
  2. Step 2: Convert to fraction form
    143,041.12/197,403.48 = 79,379.44/x
  3. Step 3: Cross multiply
    143,041.12x = 197,403.48 × 79,379.44
  4. Step 4: Simplify right side
    143,041.12x = 15,669,777,696.45
  5. Step 5: Solve for x
    x = 15,669,777,696.45/143,041.12
  6. Step 6: Final answer
    x = 109,547.36

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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.