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Finding the Fourth Proportional to 103,650.21, 155,486.42 and 28,770.67

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Solution

The fourth proportional to 103,650.21, 155,486.42 and 28,770.67 is: 43,159.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,650.21 : 155,486.42 = 28,770.67 : x
  2. Step 2: Convert to fraction form
    103,650.21/155,486.42 = 28,770.67/x
  3. Step 3: Cross multiply
    103,650.21x = 155,486.42 × 28,770.67
  4. Step 4: Simplify right side
    103,650.21x = 4,473,448,162.51
  5. Step 5: Solve for x
    x = 4,473,448,162.51/103,650.21
  6. Step 6: Final answer
    x = 43,159.09

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1.5x scale

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.