Home / 103,439.67-155,156.40-28,564.38

Finding the Fourth Proportional to 103,439.67, 155,156.40 and 28,564.38

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Solution

The fourth proportional to 103,439.67, 155,156.40 and 28,564.38 is: 42,845.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,439.67 : 155,156.40 = 28,564.38 : x
  2. Step 2: Convert to fraction form
    103,439.67/155,156.40 = 28,564.38/x
  3. Step 3: Cross multiply
    103,439.67x = 155,156.40 × 28,564.38
  4. Step 4: Simplify right side
    103,439.67x = 4,431,946,369.03
  5. Step 5: Solve for x
    x = 4,431,946,369.03/103,439.67
  6. Step 6: Final answer
    x = 42,845.71

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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.