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Finding the Fourth Proportional to 103,693.16, 155,539.65 and 28,813.27

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Solution

The fourth proportional to 103,693.16, 155,539.65 and 28,813.27 is: 43,219.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,693.16 : 155,539.65 = 28,813.27 : x
  2. Step 2: Convert to fraction form
    103,693.16/155,539.65 = 28,813.27/x
  3. Step 3: Cross multiply
    103,693.16x = 155,539.65 × 28,813.27
  4. Step 4: Simplify right side
    103,693.16x = 4,481,605,542.31
  5. Step 5: Solve for x
    x = 4,481,605,542.31/103,693.16
  6. Step 6: Final answer
    x = 43,219.88

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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.