Home / 99,723.30-149,583.80-28,647.68

Finding the Fourth Proportional to 99,723.30, 149,583.80 and 28,647.68

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Solution

The fourth proportional to 99,723.30, 149,583.80 and 28,647.68 is: 42,971.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,723.30 : 149,583.80 = 28,647.68 : x
  2. Step 2: Convert to fraction form
    99,723.30/149,583.80 = 28,647.68/x
  3. Step 3: Cross multiply
    99,723.30x = 149,583.80 × 28,647.68
  4. Step 4: Simplify right side
    99,723.30x = 4,285,228,835.58
  5. Step 5: Solve for x
    x = 4,285,228,835.58/99,723.30
  6. Step 6: Final answer
    x = 42,971.19

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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.