Home / 143,816.34-198,466.74-86,456.30

Finding the Fourth Proportional to 143,816.34, 198,466.74 and 86,456.30

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Solution

The fourth proportional to 143,816.34, 198,466.74 and 86,456.30 is: 119,309.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,816.34 : 198,466.74 = 86,456.30 : x
  2. Step 2: Convert to fraction form
    143,816.34/198,466.74 = 86,456.30/x
  3. Step 3: Cross multiply
    143,816.34x = 198,466.74 × 86,456.30
  4. Step 4: Simplify right side
    143,816.34x = 17,158,699,021.13
  5. Step 5: Solve for x
    x = 17,158,699,021.13/143,816.34
  6. Step 6: Final answer
    x = 119,309.80

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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.