Home / 99,381.22-149,072.70-28,303.79

Finding the Fourth Proportional to 99,381.22, 149,072.70 and 28,303.79

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Solution

The fourth proportional to 99,381.22, 149,072.70 and 28,303.79 is: 42,455.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,381.22 : 149,072.70 = 28,303.79 : x
  2. Step 2: Convert to fraction form
    99,381.22/149,072.70 = 28,303.79/x
  3. Step 3: Cross multiply
    99,381.22x = 149,072.70 × 28,303.79
  4. Step 4: Simplify right side
    99,381.22x = 4,219,322,768.21
  5. Step 5: Solve for x
    x = 4,219,322,768.21/99,381.22
  6. Step 6: Final answer
    x = 42,455.94

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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.