Home / 143,345.07-197,823.20-79,681.50

Finding the Fourth Proportional to 143,345.07, 197,823.20 and 79,681.50

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Solution

The fourth proportional to 143,345.07, 197,823.20 and 79,681.50 is: 109,964.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,345.07 : 197,823.20 = 79,681.50 : x
  2. Step 2: Convert to fraction form
    143,345.07/197,823.20 = 79,681.50/x
  3. Step 3: Cross multiply
    143,345.07x = 197,823.20 × 79,681.50
  4. Step 4: Simplify right side
    143,345.07x = 15,762,848,912.39
  5. Step 5: Solve for x
    x = 15,762,848,912.39/143,345.07
  6. Step 6: Final answer
    x = 109,964.36

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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.