Home / 145,579.74-200,897.91-81,912.54

Finding the Fourth Proportional to 145,579.74, 200,897.91 and 81,912.54

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Solution

The fourth proportional to 145,579.74, 200,897.91 and 81,912.54 is: 113,038.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,579.74 : 200,897.91 = 81,912.54 : x
  2. Step 2: Convert to fraction form
    145,579.74/200,897.91 = 81,912.54/x
  3. Step 3: Cross multiply
    145,579.74x = 200,897.91 × 81,912.54
  4. Step 4: Simplify right side
    145,579.74x = 16,456,058,088.79
  5. Step 5: Solve for x
    x = 16,456,058,088.79/145,579.74
  6. Step 6: Final answer
    x = 113,038.11

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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.