Home / 156,983.40-216,638.52-85,364.04

Finding the Fourth Proportional to 156,983.40, 216,638.52 and 85,364.04

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Solution

The fourth proportional to 156,983.40, 216,638.52 and 85,364.04 is: 117,803.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,983.40 : 216,638.52 = 85,364.04 : x
  2. Step 2: Convert to fraction form
    156,983.40/216,638.52 = 85,364.04/x
  3. Step 3: Cross multiply
    156,983.40x = 216,638.52 × 85,364.04
  4. Step 4: Simplify right side
    156,983.40x = 18,493,139,286.82
  5. Step 5: Solve for x
    x = 18,493,139,286.82/156,983.40
  6. Step 6: Final answer
    x = 117,803.15

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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.