Home / 135,525.23-187,027.53-78,940.25

Finding the Fourth Proportional to 135,525.23, 187,027.53 and 78,940.25

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Solution

The fourth proportional to 135,525.23, 187,027.53 and 78,940.25 is: 108,939.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,525.23 : 187,027.53 = 78,940.25 : x
  2. Step 2: Convert to fraction form
    135,525.23/187,027.53 = 78,940.25/x
  3. Step 3: Cross multiply
    135,525.23x = 187,027.53 × 78,940.25
  4. Step 4: Simplify right side
    135,525.23x = 14,764,000,941.34
  5. Step 5: Solve for x
    x = 14,764,000,941.34/135,525.23
  6. Step 6: Final answer
    x = 108,939.13

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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.