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Finding the Fourth Proportional to 173,063.39, 259,410.40 and 78,283.67

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Solution

The fourth proportional to 173,063.39, 259,410.40 and 78,283.67 is: 117,341.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,063.39 : 259,410.40 = 78,283.67 : x
  2. Step 2: Convert to fraction form
    173,063.39/259,410.40 = 78,283.67/x
  3. Step 3: Cross multiply
    173,063.39x = 259,410.40 × 78,283.67
  4. Step 4: Simplify right side
    173,063.39x = 20,307,596,655.41
  5. Step 5: Solve for x
    x = 20,307,596,655.41/173,063.39
  6. Step 6: Final answer
    x = 117,341.96

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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.