Home / 156,966.15-216,607.37-85,343.70

Finding the Fourth Proportional to 156,966.15, 216,607.37 and 85,343.70

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Solution

The fourth proportional to 156,966.15, 216,607.37 and 85,343.70 is: 117,771.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,966.15 : 216,607.37 = 85,343.70 : x
  2. Step 2: Convert to fraction form
    156,966.15/216,607.37 = 85,343.70/x
  3. Step 3: Cross multiply
    156,966.15x = 216,607.37 × 85,343.70
  4. Step 4: Simplify right side
    156,966.15x = 18,486,073,976.35
  5. Step 5: Solve for x
    x = 18,486,073,976.35/156,966.15
  6. Step 6: Final answer
    x = 117,771.09

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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.