Home / 156,933.05-216,569.13-85,314.60

Finding the Fourth Proportional to 156,933.05, 216,569.13 and 85,314.60

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Solution

The fourth proportional to 156,933.05, 216,569.13 and 85,314.60 is: 117,734.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,933.05 : 216,569.13 = 85,314.60 : x
  2. Step 2: Convert to fraction form
    156,933.05/216,569.13 = 85,314.60/x
  3. Step 3: Cross multiply
    156,933.05x = 216,569.13 × 85,314.60
  4. Step 4: Simplify right side
    156,933.05x = 18,476,509,098.21
  5. Step 5: Solve for x
    x = 18,476,509,098.21/156,933.05
  6. Step 6: Final answer
    x = 117,734.98

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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.