Home / 156,945.36-216,588.84-85,330.32

Finding the Fourth Proportional to 156,945.36, 216,588.84 and 85,330.32

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Solution

The fourth proportional to 156,945.36, 216,588.84 and 85,330.32 is: 117,758.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,945.36 : 216,588.84 = 85,330.32 : x
  2. Step 2: Convert to fraction form
    156,945.36/216,588.84 = 85,330.32/x
  3. Step 3: Cross multiply
    156,945.36x = 216,588.84 × 85,330.32
  4. Step 4: Simplify right side
    156,945.36x = 18,481,595,025.63
  5. Step 5: Solve for x
    x = 18,481,595,025.63/156,945.36
  6. Step 6: Final answer
    x = 117,758.15

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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.