Home / 99,818.70-149,705.18-28,741.20

Finding the Fourth Proportional to 99,818.70, 149,705.18 and 28,741.20

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Solution

The fourth proportional to 99,818.70, 149,705.18 and 28,741.20 is: 43,105.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,818.70 : 149,705.18 = 28,741.20 : x
  2. Step 2: Convert to fraction form
    99,818.70/149,705.18 = 28,741.20/x
  3. Step 3: Cross multiply
    99,818.70x = 149,705.18 × 28,741.20
  4. Step 4: Simplify right side
    99,818.70x = 4,302,706,519.42
  5. Step 5: Solve for x
    x = 4,302,706,519.42/99,818.70
  6. Step 6: Final answer
    x = 43,105.21

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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.