Home / 156,932.87-216,564.79-85,314.70

Finding the Fourth Proportional to 156,932.87, 216,564.79 and 85,314.70

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Solution

The fourth proportional to 156,932.87, 216,564.79 and 85,314.70 is: 117,732.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,932.87 : 216,564.79 = 85,314.70 : x
  2. Step 2: Convert to fraction form
    156,932.87/216,564.79 = 85,314.70/x
  3. Step 3: Cross multiply
    156,932.87x = 216,564.79 × 85,314.70
  4. Step 4: Simplify right side
    156,932.87x = 18,476,160,089.41
  5. Step 5: Solve for x
    x = 18,476,160,089.41/156,932.87
  6. Step 6: Final answer
    x = 117,732.89

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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.