Home / 90,736.45-135,225.60-86,012.53

Finding the Fourth Proportional to 90,736.45, 135,225.60 and 86,012.53

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Solution

The fourth proportional to 90,736.45, 135,225.60 and 86,012.53 is: 128,185.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,736.45 : 135,225.60 = 86,012.53 : x
  2. Step 2: Convert to fraction form
    90,736.45/135,225.60 = 86,012.53/x
  3. Step 3: Cross multiply
    90,736.45x = 135,225.60 × 86,012.53
  4. Step 4: Simplify right side
    90,736.45x = 11,631,096,560.62
  5. Step 5: Solve for x
    x = 11,631,096,560.62/90,736.45
  6. Step 6: Final answer
    x = 128,185.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.