Home / 135,661.14-187,224.21-79,071.30

Finding the Fourth Proportional to 135,661.14, 187,224.21 and 79,071.30

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Solution

The fourth proportional to 135,661.14, 187,224.21 and 79,071.30 is: 109,125.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,661.14 : 187,224.21 = 79,071.30 : x
  2. Step 2: Convert to fraction form
    135,661.14/187,224.21 = 79,071.30/x
  3. Step 3: Cross multiply
    135,661.14x = 187,224.21 × 79,071.30
  4. Step 4: Simplify right side
    135,661.14x = 14,804,061,676.17
  5. Step 5: Solve for x
    x = 14,804,061,676.17/135,661.14
  6. Step 6: Final answer
    x = 109,125.29

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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.