Home / 143,297.61-197,754.03-78,770.18

Finding the Fourth Proportional to 143,297.61, 197,754.03 and 78,770.18

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Solution

The fourth proportional to 143,297.61, 197,754.03 and 78,770.18 is: 108,704.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,297.61 : 197,754.03 = 78,770.18 : x
  2. Step 2: Convert to fraction form
    143,297.61/197,754.03 = 78,770.18/x
  3. Step 3: Cross multiply
    143,297.61x = 197,754.03 × 78,770.18
  4. Step 4: Simplify right side
    143,297.61x = 15,577,119,550.06
  5. Step 5: Solve for x
    x = 15,577,119,550.06/143,297.61
  6. Step 6: Final answer
    x = 108,704.67

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1.5x scale

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.