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Finding the Fourth Proportional to 99,473.88, 149,219 and 43,315.84

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Solution

The fourth proportional to 99,473.88, 149,219 and 43,315.84 is: 64,977.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,473.88 : 149,219 = 43,315.84 : x
  2. Step 2: Convert to fraction form
    99,473.88/149,219 = 43,315.84/x
  3. Step 3: Cross multiply
    99,473.88x = 149,219 × 43,315.84
  4. Step 4: Simplify right side
    99,473.88x = 6,463,546,328.96
  5. Step 5: Solve for x
    x = 6,463,546,328.96/99,473.88
  6. Step 6: Final answer
    x = 64,977.32

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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.