Home / 156,015.71-215,301.44-84,395.51

Finding the Fourth Proportional to 156,015.71, 215,301.44 and 84,395.51

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Solution

The fourth proportional to 156,015.71, 215,301.44 and 84,395.51 is: 116,465.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,015.71 : 215,301.44 = 84,395.51 : x
  2. Step 2: Convert to fraction form
    156,015.71/215,301.44 = 84,395.51/x
  3. Step 3: Cross multiply
    156,015.71x = 215,301.44 × 84,395.51
  4. Step 4: Simplify right side
    156,015.71x = 18,170,474,410.56
  5. Step 5: Solve for x
    x = 18,170,474,410.56/156,015.71
  6. Step 6: Final answer
    x = 116,465.67

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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.