Home / 102,921.65-142,028.82-56,983.34

Finding the Fourth Proportional to 102,921.65, 142,028.82 and 56,983.34

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Solution

The fourth proportional to 102,921.65, 142,028.82 and 56,983.34 is: 78,635.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,921.65 : 142,028.82 = 56,983.34 : x
  2. Step 2: Convert to fraction form
    102,921.65/142,028.82 = 56,983.34/x
  3. Step 3: Cross multiply
    102,921.65x = 142,028.82 × 56,983.34
  4. Step 4: Simplify right side
    102,921.65x = 8,093,275,687.26
  5. Step 5: Solve for x
    x = 8,093,275,687.26/102,921.65
  6. Step 6: Final answer
    x = 78,635.31

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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.