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Finding the Fourth Proportional to 162,123.40, 243,039.30 and 102,928.60

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Solution

The fourth proportional to 162,123.40, 243,039.30 and 102,928.60 is: 154,300.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,123.40 : 243,039.30 = 102,928.60 : x
  2. Step 2: Convert to fraction form
    162,123.40/243,039.30 = 102,928.60/x
  3. Step 3: Cross multiply
    162,123.40x = 243,039.30 × 102,928.60
  4. Step 4: Simplify right side
    162,123.40x = 25,015,694,893.98
  5. Step 5: Solve for x
    x = 25,015,694,893.98/162,123.40
  6. Step 6: Final answer
    x = 154,300.33

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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.