Home / 143,415.30-197,962.20-86,826.63

Finding the Fourth Proportional to 143,415.30, 197,962.20 and 86,826.63

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Solution

The fourth proportional to 143,415.30, 197,962.20 and 86,826.63 is: 119,850.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,415.30 : 197,962.20 = 86,826.63 : x
  2. Step 2: Convert to fraction form
    143,415.30/197,962.20 = 86,826.63/x
  3. Step 3: Cross multiply
    143,415.30x = 197,962.20 × 86,826.63
  4. Step 4: Simplify right side
    143,415.30x = 17,188,390,693.39
  5. Step 5: Solve for x
    x = 17,188,390,693.39/143,415.30
  6. Step 6: Final answer
    x = 119,850.47

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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.