Home / 143,936.78-215,798.54-68,985.59

Finding the Fourth Proportional to 143,936.78, 215,798.54 and 68,985.59

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Solution

The fourth proportional to 143,936.78, 215,798.54 and 68,985.59 is: 103,427.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,936.78 : 215,798.54 = 68,985.59 : x
  2. Step 2: Convert to fraction form
    143,936.78/215,798.54 = 68,985.59/x
  3. Step 3: Cross multiply
    143,936.78x = 215,798.54 × 68,985.59
  4. Step 4: Simplify right side
    143,936.78x = 14,886,988,179.12
  5. Step 5: Solve for x
    x = 14,886,988,179.12/143,936.78
  6. Step 6: Final answer
    x = 103,427.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.