Home / 143,676.75-198,281.88-86,333.61

Finding the Fourth Proportional to 143,676.75, 198,281.88 and 86,333.61

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Solution

The fourth proportional to 143,676.75, 198,281.88 and 86,333.61 is: 119,145.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,676.75 : 198,281.88 = 86,333.61 : x
  2. Step 2: Convert to fraction form
    143,676.75/198,281.88 = 86,333.61/x
  3. Step 3: Cross multiply
    143,676.75x = 198,281.88 × 86,333.61
  4. Step 4: Simplify right side
    143,676.75x = 17,118,390,497.99
  5. Step 5: Solve for x
    x = 17,118,390,497.99/143,676.75
  6. Step 6: Final answer
    x = 119,145.17

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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.