Home / 156,638.32-216,161.07-85,018.36

Finding the Fourth Proportional to 156,638.32, 216,161.07 and 85,018.36

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Solution

The fourth proportional to 156,638.32, 216,161.07 and 85,018.36 is: 117,325.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,638.32 : 216,161.07 = 85,018.36 : x
  2. Step 2: Convert to fraction form
    156,638.32/216,161.07 = 85,018.36/x
  3. Step 3: Cross multiply
    156,638.32x = 216,161.07 × 85,018.36
  4. Step 4: Simplify right side
    156,638.32x = 18,377,659,667.25
  5. Step 5: Solve for x
    x = 18,377,659,667.25/156,638.32
  6. Step 6: Final answer
    x = 117,325.44

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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.