Home / 143,349.03-197,822.40-78,822.43

Finding the Fourth Proportional to 143,349.03, 197,822.40 and 78,822.43

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Solution

The fourth proportional to 143,349.03, 197,822.40 and 78,822.43 is: 108,775.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,349.03 : 197,822.40 = 78,822.43 : x
  2. Step 2: Convert to fraction form
    143,349.03/197,822.40 = 78,822.43/x
  3. Step 3: Cross multiply
    143,349.03x = 197,822.40 × 78,822.43
  4. Step 4: Simplify right side
    143,349.03x = 15,592,842,932.12
  5. Step 5: Solve for x
    x = 15,592,842,932.12/143,349.03
  6. Step 6: Final answer
    x = 108,775.36

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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.