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Finding the Fourth Proportional to 100,245.76, 149,994.90 and 99,124.70

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Solution

The fourth proportional to 100,245.76, 149,994.90 and 99,124.70 is: 148,317.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,245.76 : 149,994.90 = 99,124.70 : x
  2. Step 2: Convert to fraction form
    100,245.76/149,994.90 = 99,124.70/x
  3. Step 3: Cross multiply
    100,245.76x = 149,994.90 × 99,124.70
  4. Step 4: Simplify right side
    100,245.76x = 14,868,198,714.06
  5. Step 5: Solve for x
    x = 14,868,198,714.06/100,245.76
  6. Step 6: Final answer
    x = 148,317.49

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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.