Home / 156,621.87-216,138.33-85,001.94

Finding the Fourth Proportional to 156,621.87, 216,138.33 and 85,001.94

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Solution

The fourth proportional to 156,621.87, 216,138.33 and 85,001.94 is: 117,302.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,621.87 : 216,138.33 = 85,001.94 : x
  2. Step 2: Convert to fraction form
    156,621.87/216,138.33 = 85,001.94/x
  3. Step 3: Cross multiply
    156,621.87x = 216,138.33 × 85,001.94
  4. Step 4: Simplify right side
    156,621.87x = 18,372,177,358.36
  5. Step 5: Solve for x
    x = 18,372,177,358.36/156,621.87
  6. Step 6: Final answer
    x = 117,302.76

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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.