Home / 104,136.69-143,709.31-56,390.04

Finding the Fourth Proportional to 104,136.69, 143,709.31 and 56,390.04

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Solution

The fourth proportional to 104,136.69, 143,709.31 and 56,390.04 is: 77,818.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,136.69 : 143,709.31 = 56,390.04 : x
  2. Step 2: Convert to fraction form
    104,136.69/143,709.31 = 56,390.04/x
  3. Step 3: Cross multiply
    104,136.69x = 143,709.31 × 56,390.04
  4. Step 4: Simplify right side
    104,136.69x = 8,103,773,968.36
  5. Step 5: Solve for x
    x = 8,103,773,968.36/104,136.69
  6. Step 6: Final answer
    x = 77,818.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.