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Finding the Fourth Proportional to 115,167.66, 172,361.30 and 70,822.50

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Solution

The fourth proportional to 115,167.66, 172,361.30 and 70,822.50 is: 105,993.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,167.66 : 172,361.30 = 70,822.50 : x
  2. Step 2: Convert to fraction form
    115,167.66/172,361.30 = 70,822.50/x
  3. Step 3: Cross multiply
    115,167.66x = 172,361.30 × 70,822.50
  4. Step 4: Simplify right side
    115,167.66x = 12,207,058,169.25
  5. Step 5: Solve for x
    x = 12,207,058,169.25/115,167.66
  6. Step 6: Final answer
    x = 105,993.80

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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.