Home / 138,935.69-208,232.55-79,014.45

Finding the Fourth Proportional to 138,935.69, 208,232.55 and 79,014.45

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Solution

The fourth proportional to 138,935.69, 208,232.55 and 79,014.45 is: 118,424.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,935.69 : 208,232.55 = 79,014.45 : x
  2. Step 2: Convert to fraction form
    138,935.69/208,232.55 = 79,014.45/x
  3. Step 3: Cross multiply
    138,935.69x = 208,232.55 × 79,014.45
  4. Step 4: Simplify right side
    138,935.69x = 16,453,380,410.35
  5. Step 5: Solve for x
    x = 16,453,380,410.35/138,935.69
  6. Step 6: Final answer
    x = 118,424.44

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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.