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Finding the Fourth Proportional to 103,143.54, 154,715.37 and 28,264.32

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Solution

The fourth proportional to 103,143.54, 154,715.37 and 28,264.32 is: 42,396.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,143.54 : 154,715.37 = 28,264.32 : x
  2. Step 2: Convert to fraction form
    103,143.54/154,715.37 = 28,264.32/x
  3. Step 3: Cross multiply
    103,143.54x = 154,715.37 × 28,264.32
  4. Step 4: Simplify right side
    103,143.54x = 4,372,924,726.60
  5. Step 5: Solve for x
    x = 4,372,924,726.60/103,143.54
  6. Step 6: Final answer
    x = 42,396.50

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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.