Home / 143,140.65-197,515.50-79,466.15

Finding the Fourth Proportional to 143,140.65, 197,515.50 and 79,466.15

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Solution

The fourth proportional to 143,140.65, 197,515.50 and 79,466.15 is: 109,652.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,140.65 : 197,515.50 = 79,466.15 : x
  2. Step 2: Convert to fraction form
    143,140.65/197,515.50 = 79,466.15/x
  3. Step 3: Cross multiply
    143,140.65x = 197,515.50 × 79,466.15
  4. Step 4: Simplify right side
    143,140.65x = 15,695,796,350.33
  5. Step 5: Solve for x
    x = 15,695,796,350.33/143,140.65
  6. Step 6: Final answer
    x = 109,652.96

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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.