Home / 135,588.64-187,049.04-85,315.36

Finding the Fourth Proportional to 135,588.64, 187,049.04 and 85,315.36

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Solution

The fourth proportional to 135,588.64, 187,049.04 and 85,315.36 is: 117,695.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,588.64 : 187,049.04 = 85,315.36 : x
  2. Step 2: Convert to fraction form
    135,588.64/187,049.04 = 85,315.36/x
  3. Step 3: Cross multiply
    135,588.64x = 187,049.04 × 85,315.36
  4. Step 4: Simplify right side
    135,588.64x = 15,958,156,185.25
  5. Step 5: Solve for x
    x = 15,958,156,185.25/135,588.64
  6. Step 6: Final answer
    x = 117,695.38

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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.