Home / 99,239.10-149,050.14-85,039.79

Finding the Fourth Proportional to 99,239.10, 149,050.14 and 85,039.79

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Solution

The fourth proportional to 99,239.10, 149,050.14 and 85,039.79 is: 127,723.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,239.10 : 149,050.14 = 85,039.79 : x
  2. Step 2: Convert to fraction form
    99,239.10/149,050.14 = 85,039.79/x
  3. Step 3: Cross multiply
    99,239.10x = 149,050.14 × 85,039.79
  4. Step 4: Simplify right side
    99,239.10x = 12,675,191,859.82
  5. Step 5: Solve for x
    x = 12,675,191,859.82/99,239.10
  6. Step 6: Final answer
    x = 127,723.77

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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.