Home / 149,128.02-205,872.91-115,059.96

Finding the Fourth Proportional to 149,128.02, 205,872.91 and 115,059.96

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Solution

The fourth proportional to 149,128.02, 205,872.91 and 115,059.96 is: 158,841.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,128.02 : 205,872.91 = 115,059.96 : x
  2. Step 2: Convert to fraction form
    149,128.02/205,872.91 = 115,059.96/x
  3. Step 3: Cross multiply
    149,128.02x = 205,872.91 × 115,059.96
  4. Step 4: Simplify right side
    149,128.02x = 23,687,728,502.03
  5. Step 5: Solve for x
    x = 23,687,728,502.03/149,128.02
  6. Step 6: Final answer
    x = 158,841.57

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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.