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Finding the Fourth Proportional to 143,159.74, 197,559.36 and 79,497.76

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Solution

The fourth proportional to 143,159.74, 197,559.36 and 79,497.76 is: 109,706.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,159.74 : 197,559.36 = 79,497.76 : x
  2. Step 2: Convert to fraction form
    143,159.74/197,559.36 = 79,497.76/x
  3. Step 3: Cross multiply
    143,159.74x = 197,559.36 × 79,497.76
  4. Step 4: Simplify right side
    143,159.74x = 15,705,526,587.03
  5. Step 5: Solve for x
    x = 15,705,526,587.03/143,159.74
  6. Step 6: Final answer
    x = 109,706.31

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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.