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Finding the Fourth Proportional to 143,307.37, 197,762.73 and 79,643.89

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Solution

The fourth proportional to 143,307.37, 197,762.73 and 79,643.89 is: 109,907.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,307.37 : 197,762.73 = 79,643.89 : x
  2. Step 2: Convert to fraction form
    143,307.37/197,762.73 = 79,643.89/x
  3. Step 3: Cross multiply
    143,307.37x = 197,762.73 × 79,643.89
  4. Step 4: Simplify right side
    143,307.37x = 15,750,593,114.22
  5. Step 5: Solve for x
    x = 15,750,593,114.22/143,307.37
  6. Step 6: Final answer
    x = 109,907.77

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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.