Home / 156,218.40-215,580.32-84,596.78

Finding the Fourth Proportional to 156,218.40, 215,580.32 and 84,596.78

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Solution

The fourth proportional to 156,218.40, 215,580.32 and 84,596.78 is: 116,742.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,218.40 : 215,580.32 = 84,596.78 : x
  2. Step 2: Convert to fraction form
    156,218.40/215,580.32 = 84,596.78/x
  3. Step 3: Cross multiply
    156,218.40x = 215,580.32 × 84,596.78
  4. Step 4: Simplify right side
    156,218.40x = 18,237,401,336.57
  5. Step 5: Solve for x
    x = 18,237,401,336.57/156,218.40
  6. Step 6: Final answer
    x = 116,742.98

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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.