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Finding the Fourth Proportional to 173,258.60, 259,985.10 and 73,401.80

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Solution

The fourth proportional to 173,258.60, 259,985.10 and 73,401.80 is: 110,143.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,258.60 : 259,985.10 = 73,401.80 : x
  2. Step 2: Convert to fraction form
    173,258.60/259,985.10 = 73,401.80/x
  3. Step 3: Cross multiply
    173,258.60x = 259,985.10 × 73,401.80
  4. Step 4: Simplify right side
    173,258.60x = 19,083,374,313.18
  5. Step 5: Solve for x
    x = 19,083,374,313.18/173,258.60
  6. Step 6: Final answer
    x = 110,143.88

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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.