Home / 100,216.40-149,540.38-99,633.20

Finding the Fourth Proportional to 100,216.40, 149,540.38 and 99,633.20

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Solution

The fourth proportional to 100,216.40, 149,540.38 and 99,633.20 is: 148,670.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,216.40 : 149,540.38 = 99,633.20 : x
  2. Step 2: Convert to fraction form
    100,216.40/149,540.38 = 99,633.20/x
  3. Step 3: Cross multiply
    100,216.40x = 149,540.38 × 99,633.20
  4. Step 4: Simplify right side
    100,216.40x = 14,899,186,588.62
  5. Step 5: Solve for x
    x = 14,899,186,588.62/100,216.40
  6. Step 6: Final answer
    x = 148,670.14

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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.