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Finding the Fourth Proportional to 173,139.30, 259,744.05 and 98,295.30

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Solution

The fourth proportional to 173,139.30, 259,744.05 and 98,295.30 is: 147,462.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,139.30 : 259,744.05 = 98,295.30 : x
  2. Step 2: Convert to fraction form
    173,139.30/259,744.05 = 98,295.30/x
  3. Step 3: Cross multiply
    173,139.30x = 259,744.05 × 98,295.30
  4. Step 4: Simplify right side
    173,139.30x = 25,531,619,317.97
  5. Step 5: Solve for x
    x = 25,531,619,317.97/173,139.30
  6. Step 6: Final answer
    x = 147,462.88

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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.