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Finding the Fourth Proportional to 103,068.45, 154,600.46 and 28,188.59

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Solution

The fourth proportional to 103,068.45, 154,600.46 and 28,188.59 is: 42,282.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,068.45 : 154,600.46 = 28,188.59 : x
  2. Step 2: Convert to fraction form
    103,068.45/154,600.46 = 28,188.59/x
  3. Step 3: Cross multiply
    103,068.45x = 154,600.46 × 28,188.59
  4. Step 4: Simplify right side
    103,068.45x = 4,357,968,594.25
  5. Step 5: Solve for x
    x = 4,357,968,594.25/103,068.45
  6. Step 6: Final answer
    x = 42,282.28

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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.