Home / 105,731.03-145,910.70-57,983.96

Finding the Fourth Proportional to 105,731.03, 145,910.70 and 57,983.96

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Solution

The fourth proportional to 105,731.03, 145,910.70 and 57,983.96 is: 80,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,731.03 : 145,910.70 = 57,983.96 : x
  2. Step 2: Convert to fraction form
    105,731.03/145,910.70 = 57,983.96/x
  3. Step 3: Cross multiply
    105,731.03x = 145,910.70 × 57,983.96
  4. Step 4: Simplify right side
    105,731.03x = 8,460,480,192.37
  5. Step 5: Solve for x
    x = 8,460,480,192.37/105,731.03
  6. Step 6: Final answer
    x = 80,018.90

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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.