Home / 103,870.26-143,269.60-63,603.95

Finding the Fourth Proportional to 103,870.26, 143,269.60 and 63,603.95

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Solution

The fourth proportional to 103,870.26, 143,269.60 and 63,603.95 is: 87,729.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,870.26 : 143,269.60 = 63,603.95 : x
  2. Step 2: Convert to fraction form
    103,870.26/143,269.60 = 63,603.95/x
  3. Step 3: Cross multiply
    103,870.26x = 143,269.60 × 63,603.95
  4. Step 4: Simplify right side
    103,870.26x = 9,112,512,474.92
  5. Step 5: Solve for x
    x = 9,112,512,474.92/103,870.26
  6. Step 6: Final answer
    x = 87,729.76

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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.