Home / 103,866.03-143,335.74-65,642.57

Finding the Fourth Proportional to 103,866.03, 143,335.74 and 65,642.57

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Solution

The fourth proportional to 103,866.03, 143,335.74 and 65,642.57 is: 90,587.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,866.03 : 143,335.74 = 65,642.57 : x
  2. Step 2: Convert to fraction form
    103,866.03/143,335.74 = 65,642.57/x
  3. Step 3: Cross multiply
    103,866.03x = 143,335.74 × 65,642.57
  4. Step 4: Simplify right side
    103,866.03x = 9,408,926,413.44
  5. Step 5: Solve for x
    x = 9,408,926,413.44/103,866.03
  6. Step 6: Final answer
    x = 90,587.14

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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.