Home / 103,913.70-155,943.45-66,564.60

Finding the Fourth Proportional to 103,913.70, 155,943.45 and 66,564.60

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Solution

The fourth proportional to 103,913.70, 155,943.45 and 66,564.60 is: 99,893.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,913.70 : 155,943.45 = 66,564.60 : x
  2. Step 2: Convert to fraction form
    103,913.70/155,943.45 = 66,564.60/x
  3. Step 3: Cross multiply
    103,913.70x = 155,943.45 × 66,564.60
  4. Step 4: Simplify right side
    103,913.70x = 10,380,313,371.87
  5. Step 5: Solve for x
    x = 10,380,313,371.87/103,913.70
  6. Step 6: Final answer
    x = 99,893.60

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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.