Home / 156,936.17-216,562.71-85,315.56

Finding the Fourth Proportional to 156,936.17, 216,562.71 and 85,315.56

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Solution

The fourth proportional to 156,936.17, 216,562.71 and 85,315.56 is: 117,730.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,936.17 : 216,562.71 = 85,315.56 : x
  2. Step 2: Convert to fraction form
    156,936.17/216,562.71 = 85,315.56/x
  3. Step 3: Cross multiply
    156,936.17x = 216,562.71 × 85,315.56
  4. Step 4: Simplify right side
    156,936.17x = 18,476,169,604.76
  5. Step 5: Solve for x
    x = 18,476,169,604.76/156,936.17
  6. Step 6: Final answer
    x = 117,730.48

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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.