Home / 156,404.10-215,838.77-84,785.25

Finding the Fourth Proportional to 156,404.10, 215,838.77 and 84,785.25

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Solution

The fourth proportional to 156,404.10, 215,838.77 and 84,785.25 is: 117,004.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,404.10 : 215,838.77 = 84,785.25 : x
  2. Step 2: Convert to fraction form
    156,404.10/215,838.77 = 84,785.25/x
  3. Step 3: Cross multiply
    156,404.10x = 215,838.77 × 84,785.25
  4. Step 4: Simplify right side
    156,404.10x = 18,299,943,650.22
  5. Step 5: Solve for x
    x = 18,299,943,650.22/156,404.10
  6. Step 6: Final answer
    x = 117,004.25

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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.