Home / 91,635.42-126,459.99-87,436.38

Finding the Fourth Proportional to 91,635.42, 126,459.99 and 87,436.38

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Solution

The fourth proportional to 91,635.42, 126,459.99 and 87,436.38 is: 120,665.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,635.42 : 126,459.99 = 87,436.38 : x
  2. Step 2: Convert to fraction form
    91,635.42/126,459.99 = 87,436.38/x
  3. Step 3: Cross multiply
    91,635.42x = 126,459.99 × 87,436.38
  4. Step 4: Simplify right side
    91,635.42x = 11,057,203,740.44
  5. Step 5: Solve for x
    x = 11,057,203,740.44/91,635.42
  6. Step 6: Final answer
    x = 120,665.17

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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.