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Finding the Fourth Proportional to 115,469.70, 172,912.95 and 110,220.90

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Solution

The fourth proportional to 115,469.70, 172,912.95 and 110,220.90 is: 165,053.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,469.70 : 172,912.95 = 110,220.90 : x
  2. Step 2: Convert to fraction form
    115,469.70/172,912.95 = 110,220.90/x
  3. Step 3: Cross multiply
    115,469.70x = 172,912.95 × 110,220.90
  4. Step 4: Simplify right side
    115,469.70x = 19,058,620,970.66
  5. Step 5: Solve for x
    x = 19,058,620,970.66/115,469.70
  6. Step 6: Final answer
    x = 165,053.00

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1.5x scale

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.