Home / 156,623.64-216,138.83-85,003.71

Finding the Fourth Proportional to 156,623.64, 216,138.83 and 85,003.71

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Solution

The fourth proportional to 156,623.64, 216,138.83 and 85,003.71 is: 117,304.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,623.64 : 216,138.83 = 85,003.71 : x
  2. Step 2: Convert to fraction form
    156,623.64/216,138.83 = 85,003.71/x
  3. Step 3: Cross multiply
    156,623.64x = 216,138.83 × 85,003.71
  4. Step 4: Simplify right side
    156,623.64x = 18,372,602,000.04
  5. Step 5: Solve for x
    x = 18,372,602,000.04/156,623.64
  6. Step 6: Final answer
    x = 117,304.14

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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.