Home / 103,129.45-154,709.01-39,111.16

Finding the Fourth Proportional to 103,129.45, 154,709.01 and 39,111.16

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Solution

The fourth proportional to 103,129.45, 154,709.01 and 39,111.16 is: 58,672.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,129.45 : 154,709.01 = 39,111.16 : x
  2. Step 2: Convert to fraction form
    103,129.45/154,709.01 = 39,111.16/x
  3. Step 3: Cross multiply
    103,129.45x = 154,709.01 × 39,111.16
  4. Step 4: Simplify right side
    103,129.45x = 6,050,848,843.55
  5. Step 5: Solve for x
    x = 6,050,848,843.55/103,129.45
  6. Step 6: Final answer
    x = 58,672.37

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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.