Home / 143,141.44-197,531.52-79,477.12

Finding the Fourth Proportional to 143,141.44, 197,531.52 and 79,477.12

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Solution

The fourth proportional to 143,141.44, 197,531.52 and 79,477.12 is: 109,676.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,141.44 : 197,531.52 = 79,477.12 : x
  2. Step 2: Convert to fraction form
    143,141.44/197,531.52 = 79,477.12/x
  3. Step 3: Cross multiply
    143,141.44x = 197,531.52 × 79,477.12
  4. Step 4: Simplify right side
    143,141.44x = 15,699,236,318.82
  5. Step 5: Solve for x
    x = 15,699,236,318.82/143,141.44
  6. Step 6: Final answer
    x = 109,676.39

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1.5x scale

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.