Home / 99,728.19-138,207.14-97,835.76

Finding the Fourth Proportional to 99,728.19, 138,207.14 and 97,835.76

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Solution

The fourth proportional to 99,728.19, 138,207.14 and 97,835.76 is: 135,584.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,728.19 : 138,207.14 = 97,835.76 : x
  2. Step 2: Convert to fraction form
    99,728.19/138,207.14 = 97,835.76/x
  3. Step 3: Cross multiply
    99,728.19x = 138,207.14 × 97,835.76
  4. Step 4: Simplify right side
    99,728.19x = 13,521,600,579.33
  5. Step 5: Solve for x
    x = 13,521,600,579.33/99,728.19
  6. Step 6: Final answer
    x = 135,584.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.