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Finding the Fourth Proportional to 103,369.16, 155,054.45 and 28,493.37

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Solution

The fourth proportional to 103,369.16, 155,054.45 and 28,493.37 is: 42,740.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,369.16 : 155,054.45 = 28,493.37 : x
  2. Step 2: Convert to fraction form
    103,369.16/155,054.45 = 28,493.37/x
  3. Step 3: Cross multiply
    103,369.16x = 155,054.45 × 28,493.37
  4. Step 4: Simplify right side
    103,369.16x = 4,418,023,885.23
  5. Step 5: Solve for x
    x = 4,418,023,885.23/103,369.16
  6. Step 6: Final answer
    x = 42,740.25

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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.