Home / 143,030.61-197,380.40-79,367.04

Finding the Fourth Proportional to 143,030.61, 197,380.40 and 79,367.04

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Solution

The fourth proportional to 143,030.61, 197,380.40 and 79,367.04 is: 109,525.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,030.61 : 197,380.40 = 79,367.04 : x
  2. Step 2: Convert to fraction form
    143,030.61/197,380.40 = 79,367.04/x
  3. Step 3: Cross multiply
    143,030.61x = 197,380.40 × 79,367.04
  4. Step 4: Simplify right side
    143,030.61x = 15,665,497,705.18
  5. Step 5: Solve for x
    x = 15,665,497,705.18/143,030.61
  6. Step 6: Final answer
    x = 109,525.49

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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.