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Finding the Fourth Proportional to 172,773.36, 238,427.88 and 100,190.40

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Solution

The fourth proportional to 172,773.36, 238,427.88 and 100,190.40 is: 138,263.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,773.36 : 238,427.88 = 100,190.40 : x
  2. Step 2: Convert to fraction form
    172,773.36/238,427.88 = 100,190.40/x
  3. Step 3: Cross multiply
    172,773.36x = 238,427.88 × 100,190.40
  4. Step 4: Simplify right side
    172,773.36x = 23,888,184,668.35
  5. Step 5: Solve for x
    x = 23,888,184,668.35/172,773.36
  6. Step 6: Final answer
    x = 138,263.12

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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.