Home / 156,392.79-215,816.26-84,771.27

Finding the Fourth Proportional to 156,392.79, 215,816.26 and 84,771.27

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Solution

The fourth proportional to 156,392.79, 215,816.26 and 84,771.27 is: 116,981.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,392.79 : 215,816.26 = 84,771.27 : x
  2. Step 2: Convert to fraction form
    156,392.79/215,816.26 = 84,771.27/x
  3. Step 3: Cross multiply
    156,392.79x = 215,816.26 × 84,771.27
  4. Step 4: Simplify right side
    156,392.79x = 18,295,018,446.85
  5. Step 5: Solve for x
    x = 18,295,018,446.85/156,392.79
  6. Step 6: Final answer
    x = 116,981.21

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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.