Home / 90,731.54-136,120.23-64,129.82

Finding the Fourth Proportional to 90,731.54, 136,120.23 and 64,129.82

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Solution

The fourth proportional to 90,731.54, 136,120.23 and 64,129.82 is: 96,210.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,731.54 : 136,120.23 = 64,129.82 : x
  2. Step 2: Convert to fraction form
    90,731.54/136,120.23 = 64,129.82/x
  3. Step 3: Cross multiply
    90,731.54x = 136,120.23 × 64,129.82
  4. Step 4: Simplify right side
    90,731.54x = 8,729,365,167.66
  5. Step 5: Solve for x
    x = 8,729,365,167.66/90,731.54
  6. Step 6: Final answer
    x = 96,210.92

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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.