Home / 149,056.75-205,700.94-81,075.20

Finding the Fourth Proportional to 149,056.75, 205,700.94 and 81,075.20

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Solution

The fourth proportional to 149,056.75, 205,700.94 and 81,075.20 is: 111,885.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,056.75 : 205,700.94 = 81,075.20 : x
  2. Step 2: Convert to fraction form
    149,056.75/205,700.94 = 81,075.20/x
  3. Step 3: Cross multiply
    149,056.75x = 205,700.94 × 81,075.20
  4. Step 4: Simplify right side
    149,056.75x = 16,677,245,364.94
  5. Step 5: Solve for x
    x = 16,677,245,364.94/149,056.75
  6. Step 6: Final answer
    x = 111,885.21

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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.