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Finding the Fourth Proportional to 103,653.25, 155,480.75 and 28,779.24

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Solution

The fourth proportional to 103,653.25, 155,480.75 and 28,779.24 is: 43,169.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,653.25 : 155,480.75 = 28,779.24 : x
  2. Step 2: Convert to fraction form
    103,653.25/155,480.75 = 28,779.24/x
  3. Step 3: Cross multiply
    103,653.25x = 155,480.75 × 28,779.24
  4. Step 4: Simplify right side
    103,653.25x = 4,474,617,819.63
  5. Step 5: Solve for x
    x = 4,474,617,819.63/103,653.25
  6. Step 6: Final answer
    x = 43,169.10

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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.