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Finding the Fourth Proportional to 103,897.36, 143,368 and 63,622.54

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Solution

The fourth proportional to 103,897.36, 143,368 and 63,622.54 is: 87,792.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,897.36 : 143,368 = 63,622.54 : x
  2. Step 2: Convert to fraction form
    103,897.36/143,368 = 63,622.54/x
  3. Step 3: Cross multiply
    103,897.36x = 143,368 × 63,622.54
  4. Step 4: Simplify right side
    103,897.36x = 9,121,436,314.72
  5. Step 5: Solve for x
    x = 9,121,436,314.72/103,897.36
  6. Step 6: Final answer
    x = 87,792.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.