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Finding the Fourth Proportional to 103,584.70, 155,501.52 and 70,203.49

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Solution

The fourth proportional to 103,584.70, 155,501.52 and 70,203.49 is: 105,389.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,584.70 : 155,501.52 = 70,203.49 : x
  2. Step 2: Convert to fraction form
    103,584.70/155,501.52 = 70,203.49/x
  3. Step 3: Cross multiply
    103,584.70x = 155,501.52 × 70,203.49
  4. Step 4: Simplify right side
    103,584.70x = 10,916,749,404.30
  5. Step 5: Solve for x
    x = 10,916,749,404.30/103,584.70
  6. Step 6: Final answer
    x = 105,389.59

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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.