Home / 103,664.21-155,307.68-72,007.39

Finding the Fourth Proportional to 103,664.21, 155,307.68 and 72,007.39

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Solution

The fourth proportional to 103,664.21, 155,307.68 and 72,007.39 is: 107,880.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,664.21 : 155,307.68 = 72,007.39 : x
  2. Step 2: Convert to fraction form
    103,664.21/155,307.68 = 72,007.39/x
  3. Step 3: Cross multiply
    103,664.21x = 155,307.68 × 72,007.39
  4. Step 4: Simplify right side
    103,664.21x = 11,183,300,683.76
  5. Step 5: Solve for x
    x = 11,183,300,683.76/103,664.21
  6. Step 6: Final answer
    x = 107,880.06

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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.