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Finding the Fourth Proportional to 103,434.73, 155,149.01 and 28,559.45

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Solution

The fourth proportional to 103,434.73, 155,149.01 and 28,559.45 is: 42,838.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,434.73 : 155,149.01 = 28,559.45 : x
  2. Step 2: Convert to fraction form
    103,434.73/155,149.01 = 28,559.45/x
  3. Step 3: Cross multiply
    103,434.73x = 155,149.01 × 28,559.45
  4. Step 4: Simplify right side
    103,434.73x = 4,430,970,393.64
  5. Step 5: Solve for x
    x = 4,430,970,393.64/103,434.73
  6. Step 6: Final answer
    x = 42,838.32

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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.