Home / 143,065.68-197,430.60-79,403.44

Finding the Fourth Proportional to 143,065.68, 197,430.60 and 79,403.44

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Solution

The fourth proportional to 143,065.68, 197,430.60 and 79,403.44 is: 109,576.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,065.68 : 197,430.60 = 79,403.44 : x
  2. Step 2: Convert to fraction form
    143,065.68/197,430.60 = 79,403.44/x
  3. Step 3: Cross multiply
    143,065.68x = 197,430.60 × 79,403.44
  4. Step 4: Simplify right side
    143,065.68x = 15,676,668,801.26
  5. Step 5: Solve for x
    x = 15,676,668,801.26/143,065.68
  6. Step 6: Final answer
    x = 109,576.73

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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.