Home / 143,442.87-197,927.10-79,772.15

Finding the Fourth Proportional to 143,442.87, 197,927.10 and 79,772.15

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Solution

The fourth proportional to 143,442.87, 197,927.10 and 79,772.15 is: 110,072.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,442.87 : 197,927.10 = 79,772.15 : x
  2. Step 2: Convert to fraction form
    143,442.87/197,927.10 = 79,772.15/x
  3. Step 3: Cross multiply
    143,442.87x = 197,927.10 × 79,772.15
  4. Step 4: Simplify right side
    143,442.87x = 15,789,069,520.06
  5. Step 5: Solve for x
    x = 15,789,069,520.06/143,442.87
  6. Step 6: Final answer
    x = 110,072.18

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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.