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Finding the Fourth Proportional to 103,164.32, 154,718.43 and 28,266.39

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Solution

The fourth proportional to 103,164.32, 154,718.43 and 28,266.39 is: 42,391.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,164.32 : 154,718.43 = 28,266.39 : x
  2. Step 2: Convert to fraction form
    103,164.32/154,718.43 = 28,266.39/x
  3. Step 3: Cross multiply
    103,164.32x = 154,718.43 × 28,266.39
  4. Step 4: Simplify right side
    103,164.32x = 4,373,331,482.57
  5. Step 5: Solve for x
    x = 4,373,331,482.57/103,164.32
  6. Step 6: Final answer
    x = 42,391.90

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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.