Home / 143,321.64-197,790.57-79,660.50

Finding the Fourth Proportional to 143,321.64, 197,790.57 and 79,660.50

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Solution

The fourth proportional to 143,321.64, 197,790.57 and 79,660.50 is: 109,935.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,321.64 : 197,790.57 = 79,660.50 : x
  2. Step 2: Convert to fraction form
    143,321.64/197,790.57 = 79,660.50/x
  3. Step 3: Cross multiply
    143,321.64x = 197,790.57 × 79,660.50
  4. Step 4: Simplify right side
    143,321.64x = 15,756,095,701.49
  5. Step 5: Solve for x
    x = 15,756,095,701.49/143,321.64
  6. Step 6: Final answer
    x = 109,935.22

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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.