Home / 136,069.10-187,761.75-78,704.09

Finding the Fourth Proportional to 136,069.10, 187,761.75 and 78,704.09

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Solution

The fourth proportional to 136,069.10, 187,761.75 and 78,704.09 is: 108,603.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,069.10 : 187,761.75 = 78,704.09 : x
  2. Step 2: Convert to fraction form
    136,069.10/187,761.75 = 78,704.09/x
  3. Step 3: Cross multiply
    136,069.10x = 187,761.75 × 78,704.09
  4. Step 4: Simplify right side
    136,069.10x = 14,777,617,670.56
  5. Step 5: Solve for x
    x = 14,777,617,670.56/136,069.10
  6. Step 6: Final answer
    x = 108,603.77

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1.5x scale

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.