Home / 156,387.12-215,814.26-84,766.92

Finding the Fourth Proportional to 156,387.12, 215,814.26 and 84,766.92

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Solution

The fourth proportional to 156,387.12, 215,814.26 and 84,766.92 is: 116,978.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,387.12 : 215,814.26 = 84,766.92 : x
  2. Step 2: Convert to fraction form
    156,387.12/215,814.26 = 84,766.92/x
  3. Step 3: Cross multiply
    156,387.12x = 215,814.26 × 84,766.92
  4. Step 4: Simplify right side
    156,387.12x = 18,293,910,112.28
  5. Step 5: Solve for x
    x = 18,293,910,112.28/156,387.12
  6. Step 6: Final answer
    x = 116,978.37

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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.