Home / 156,381.44-215,806.76-84,761.39

Finding the Fourth Proportional to 156,381.44, 215,806.76 and 84,761.39

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Solution

The fourth proportional to 156,381.44, 215,806.76 and 84,761.39 is: 116,970.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,381.44 : 215,806.76 = 84,761.39 : x
  2. Step 2: Convert to fraction form
    156,381.44/215,806.76 = 84,761.39/x
  3. Step 3: Cross multiply
    156,381.44x = 215,806.76 × 84,761.39
  4. Step 4: Simplify right side
    156,381.44x = 18,292,080,081.87
  5. Step 5: Solve for x
    x = 18,292,080,081.87/156,381.44
  6. Step 6: Final answer
    x = 116,970.92

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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.