Home / 103,802.67-143,271-67,971.87

Finding the Fourth Proportional to 103,802.67, 143,271 and 67,971.87

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Solution

The fourth proportional to 103,802.67, 143,271 and 67,971.87 is: 93,816.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,802.67 : 143,271 = 67,971.87 : x
  2. Step 2: Convert to fraction form
    103,802.67/143,271 = 67,971.87/x
  3. Step 3: Cross multiply
    103,802.67x = 143,271 × 67,971.87
  4. Step 4: Simplify right side
    103,802.67x = 9,738,397,786.77
  5. Step 5: Solve for x
    x = 9,738,397,786.77/103,802.67
  6. Step 6: Final answer
    x = 93,816.45

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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.