Home / 156,933.20-216,569.95-85,314.72

Finding the Fourth Proportional to 156,933.20, 216,569.95 and 85,314.72

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Solution

The fourth proportional to 156,933.20, 216,569.95 and 85,314.72 is: 117,735.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,933.20 : 216,569.95 = 85,314.72 : x
  2. Step 2: Convert to fraction form
    156,933.20/216,569.95 = 85,314.72/x
  3. Step 3: Cross multiply
    156,933.20x = 216,569.95 × 85,314.72
  4. Step 4: Simplify right side
    156,933.20x = 18,476,604,505.20
  5. Step 5: Solve for x
    x = 18,476,604,505.20/156,933.20
  6. Step 6: Final answer
    x = 117,735.48

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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.