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Finding the Fourth Proportional to 103,108.92, 154,657.62 and 28,223.58

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Solution

The fourth proportional to 103,108.92, 154,657.62 and 28,223.58 is: 42,333.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,108.92 : 154,657.62 = 28,223.58 : x
  2. Step 2: Convert to fraction form
    103,108.92/154,657.62 = 28,223.58/x
  3. Step 3: Cross multiply
    103,108.92x = 154,657.62 × 28,223.58
  4. Step 4: Simplify right side
    103,108.92x = 4,364,991,710.68
  5. Step 5: Solve for x
    x = 4,364,991,710.68/103,108.92
  6. Step 6: Final answer
    x = 42,333.79

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1.5x scale

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.