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Finding the Fourth Proportional to 103,661.58, 155,490.21 and 29,789.58

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Solution

The fourth proportional to 103,661.58, 155,490.21 and 29,789.58 is: 44,683.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,661.58 : 155,490.21 = 29,789.58 : x
  2. Step 2: Convert to fraction form
    103,661.58/155,490.21 = 29,789.58/x
  3. Step 3: Cross multiply
    103,661.58x = 155,490.21 × 29,789.58
  4. Step 4: Simplify right side
    103,661.58x = 4,631,988,050.01
  5. Step 5: Solve for x
    x = 4,631,988,050.01/103,661.58
  6. Step 6: Final answer
    x = 44,683.75

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1.5x scale

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.