Home / 113,731.75-156,899.10-65,957.41

Finding the Fourth Proportional to 113,731.75, 156,899.10 and 65,957.41

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Solution

The fourth proportional to 113,731.75, 156,899.10 and 65,957.41 is: 90,991.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,731.75 : 156,899.10 = 65,957.41 : x
  2. Step 2: Convert to fraction form
    113,731.75/156,899.10 = 65,957.41/x
  3. Step 3: Cross multiply
    113,731.75x = 156,899.10 × 65,957.41
  4. Step 4: Simplify right side
    113,731.75x = 10,348,658,267.33
  5. Step 5: Solve for x
    x = 10,348,658,267.33/113,731.75
  6. Step 6: Final answer
    x = 90,991.81

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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.