Home / 142,075.35-196,063.03-78,413.15

Finding the Fourth Proportional to 142,075.35, 196,063.03 and 78,413.15

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Solution

The fourth proportional to 142,075.35, 196,063.03 and 78,413.15 is: 108,209.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,075.35 : 196,063.03 = 78,413.15 : x
  2. Step 2: Convert to fraction form
    142,075.35/196,063.03 = 78,413.15/x
  3. Step 3: Cross multiply
    142,075.35x = 196,063.03 × 78,413.15
  4. Step 4: Simplify right side
    142,075.35x = 15,373,919,780.84
  5. Step 5: Solve for x
    x = 15,373,919,780.84/142,075.35
  6. Step 6: Final answer
    x = 108,209.62

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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.