Home / 156,453.12-215,941.04-91,929.94

Finding the Fourth Proportional to 156,453.12, 215,941.04 and 91,929.94

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Solution

The fourth proportional to 156,453.12, 215,941.04 and 91,929.94 is: 126,884.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,453.12 : 215,941.04 = 91,929.94 : x
  2. Step 2: Convert to fraction form
    156,453.12/215,941.04 = 91,929.94/x
  3. Step 3: Cross multiply
    156,453.12x = 215,941.04 × 91,929.94
  4. Step 4: Simplify right side
    156,453.12x = 19,851,446,195.97
  5. Step 5: Solve for x
    x = 19,851,446,195.97/156,453.12
  6. Step 6: Final answer
    x = 126,884.31

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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.