Home / 186,983.72-258,038.47-102,100.78

Finding the Fourth Proportional to 186,983.72, 258,038.47 and 102,100.78

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Solution

The fourth proportional to 186,983.72, 258,038.47 and 102,100.78 is: 140,899.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,983.72 : 258,038.47 = 102,100.78 : x
  2. Step 2: Convert to fraction form
    186,983.72/258,038.47 = 102,100.78/x
  3. Step 3: Cross multiply
    186,983.72x = 258,038.47 × 102,100.78
  4. Step 4: Simplify right side
    186,983.72x = 26,345,929,057.01
  5. Step 5: Solve for x
    x = 26,345,929,057.01/186,983.72
  6. Step 6: Final answer
    x = 140,899.59

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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.