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Finding the Fourth Proportional to 103,673.06, 155,506.71 and 72,528.74

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Solution

The fourth proportional to 103,673.06, 155,506.71 and 72,528.74 is: 108,791.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,673.06 : 155,506.71 = 72,528.74 : x
  2. Step 2: Convert to fraction form
    103,673.06/155,506.71 = 72,528.74/x
  3. Step 3: Cross multiply
    103,673.06x = 155,506.71 × 72,528.74
  4. Step 4: Simplify right side
    103,673.06x = 11,278,705,737.85
  5. Step 5: Solve for x
    x = 11,278,705,737.85/103,673.06
  6. Step 6: Final answer
    x = 108,791.10

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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.