Home / 156,780.29-216,360.83-85,164.41

Finding the Fourth Proportional to 156,780.29, 216,360.83 and 85,164.41

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Solution

The fourth proportional to 156,780.29, 216,360.83 and 85,164.41 is: 117,529.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,780.29 : 216,360.83 = 85,164.41 : x
  2. Step 2: Convert to fraction form
    156,780.29/216,360.83 = 85,164.41/x
  3. Step 3: Cross multiply
    156,780.29x = 216,360.83 × 85,164.41
  4. Step 4: Simplify right side
    156,780.29x = 18,426,242,434.06
  5. Step 5: Solve for x
    x = 18,426,242,434.06/156,780.29
  6. Step 6: Final answer
    x = 117,529.07

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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.