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Finding the Fourth Proportional to 103,696.30, 155,443.33 and 56,268.51

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Solution

The fourth proportional to 103,696.30, 155,443.33 and 56,268.51 is: 84,347.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,696.30 : 155,443.33 = 56,268.51 : x
  2. Step 2: Convert to fraction form
    103,696.30/155,443.33 = 56,268.51/x
  3. Step 3: Cross multiply
    103,696.30x = 155,443.33 × 56,268.51
  4. Step 4: Simplify right side
    103,696.30x = 8,746,564,568.54
  5. Step 5: Solve for x
    x = 8,746,564,568.54/103,696.30
  6. Step 6: Final answer
    x = 84,347.89

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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.