Home / 135,561.87-187,075.39-75,136.41

Finding the Fourth Proportional to 135,561.87, 187,075.39 and 75,136.41

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Solution

The fourth proportional to 135,561.87, 187,075.39 and 75,136.41 is: 103,688.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,561.87 : 187,075.39 = 75,136.41 : x
  2. Step 2: Convert to fraction form
    135,561.87/187,075.39 = 75,136.41/x
  3. Step 3: Cross multiply
    135,561.87x = 187,075.39 × 75,136.41
  4. Step 4: Simplify right side
    135,561.87x = 14,056,173,203.95
  5. Step 5: Solve for x
    x = 14,056,173,203.95/135,561.87
  6. Step 6: Final answer
    x = 103,688.25

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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.