Home / 156,411.09-215,771.19-92,703.78

Finding the Fourth Proportional to 156,411.09, 215,771.19 and 92,703.78

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Solution

The fourth proportional to 156,411.09, 215,771.19 and 92,703.78 is: 127,886.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,411.09 : 215,771.19 = 92,703.78 : x
  2. Step 2: Convert to fraction form
    156,411.09/215,771.19 = 92,703.78/x
  3. Step 3: Cross multiply
    156,411.09x = 215,771.19 × 92,703.78
  4. Step 4: Simplify right side
    156,411.09x = 20,002,804,928.10
  5. Step 5: Solve for x
    x = 20,002,804,928.10/156,411.09
  6. Step 6: Final answer
    x = 127,886.10

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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.