Home / 79,139.94-118,709.45-19,975.36

Finding the Fourth Proportional to 79,139.94, 118,709.45 and 19,975.36

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Solution

The fourth proportional to 79,139.94, 118,709.45 and 19,975.36 is: 29,962.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,139.94 : 118,709.45 = 19,975.36 : x
  2. Step 2: Convert to fraction form
    79,139.94/118,709.45 = 19,975.36/x
  3. Step 3: Cross multiply
    79,139.94x = 118,709.45 × 19,975.36
  4. Step 4: Simplify right side
    79,139.94x = 2,371,263,899.99
  5. Step 5: Solve for x
    x = 2,371,263,899.99/79,139.94
  6. Step 6: Final answer
    x = 29,962.92

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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.