Home / 143,390.80-197,880.60-79,726.96

Finding the Fourth Proportional to 143,390.80, 197,880.60 and 79,726.96

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Solution

The fourth proportional to 143,390.80, 197,880.60 and 79,726.96 is: 110,023.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,390.80 : 197,880.60 = 79,726.96 : x
  2. Step 2: Convert to fraction form
    143,390.80/197,880.60 = 79,726.96/x
  3. Step 3: Cross multiply
    143,390.80x = 197,880.60 × 79,726.96
  4. Step 4: Simplify right side
    143,390.80x = 15,776,418,680.98
  5. Step 5: Solve for x
    x = 15,776,418,680.98/143,390.80
  6. Step 6: Final answer
    x = 110,023.93

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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.