Home / 103,781.51-143,202.66-58,456.62

Finding the Fourth Proportional to 103,781.51, 143,202.66 and 58,456.62

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Solution

The fourth proportional to 103,781.51, 143,202.66 and 58,456.62 is: 80,661.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,781.51 : 143,202.66 = 58,456.62 : x
  2. Step 2: Convert to fraction form
    103,781.51/143,202.66 = 58,456.62/x
  3. Step 3: Cross multiply
    103,781.51x = 143,202.66 × 58,456.62
  4. Step 4: Simplify right side
    103,781.51x = 8,371,143,478.61
  5. Step 5: Solve for x
    x = 8,371,143,478.61/103,781.51
  6. Step 6: Final answer
    x = 80,661.23

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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.