Home / 156,201.28-234,389.32-85,128.73

Finding the Fourth Proportional to 156,201.28, 234,389.32 and 85,128.73

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Solution

The fourth proportional to 156,201.28, 234,389.32 and 85,128.73 is: 127,740.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,201.28 : 234,389.32 = 85,128.73 : x
  2. Step 2: Convert to fraction form
    156,201.28/234,389.32 = 85,128.73/x
  3. Step 3: Cross multiply
    156,201.28x = 234,389.32 × 85,128.73
  4. Step 4: Simplify right side
    156,201.28x = 19,953,264,338.37
  5. Step 5: Solve for x
    x = 19,953,264,338.37/156,201.28
  6. Step 6: Final answer
    x = 127,740.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.