Home / 143,141.88-197,539.56-79,482.36

Finding the Fourth Proportional to 143,141.88, 197,539.56 and 79,482.36

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Solution

The fourth proportional to 143,141.88, 197,539.56 and 79,482.36 is: 109,687.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,141.88 : 197,539.56 = 79,482.36 : x
  2. Step 2: Convert to fraction form
    143,141.88/197,539.56 = 79,482.36/x
  3. Step 3: Cross multiply
    143,141.88x = 197,539.56 × 79,482.36
  4. Step 4: Simplify right side
    143,141.88x = 15,700,910,422.16
  5. Step 5: Solve for x
    x = 15,700,910,422.16/143,141.88
  6. Step 6: Final answer
    x = 109,687.75

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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.