Home / 103,918.74-143,407.83-56,172.06

Finding the Fourth Proportional to 103,918.74, 143,407.83 and 56,172.06

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Solution

The fourth proportional to 103,918.74, 143,407.83 and 56,172.06 is: 77,517.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,918.74 : 143,407.83 = 56,172.06 : x
  2. Step 2: Convert to fraction form
    103,918.74/143,407.83 = 56,172.06/x
  3. Step 3: Cross multiply
    103,918.74x = 143,407.83 × 56,172.06
  4. Step 4: Simplify right side
    103,918.74x = 8,055,513,231.23
  5. Step 5: Solve for x
    x = 8,055,513,231.23/103,918.74
  6. Step 6: Final answer
    x = 77,517.43

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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.