Home / 143,355.02-197,815.70-79,686.62

Finding the Fourth Proportional to 143,355.02, 197,815.70 and 79,686.62

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Solution

The fourth proportional to 143,355.02, 197,815.70 and 79,686.62 is: 109,959.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,355.02 : 197,815.70 = 79,686.62 : x
  2. Step 2: Convert to fraction form
    143,355.02/197,815.70 = 79,686.62/x
  3. Step 3: Cross multiply
    143,355.02x = 197,815.70 × 79,686.62
  4. Step 4: Simplify right side
    143,355.02x = 15,763,264,515.93
  5. Step 5: Solve for x
    x = 15,763,264,515.93/143,355.02
  6. Step 6: Final answer
    x = 109,959.63

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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.