Home / 126,242.57-174,277.88-78,511.30

Finding the Fourth Proportional to 126,242.57, 174,277.88 and 78,511.30

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Solution

The fourth proportional to 126,242.57, 174,277.88 and 78,511.30 is: 108,384.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,242.57 : 174,277.88 = 78,511.30 : x
  2. Step 2: Convert to fraction form
    126,242.57/174,277.88 = 78,511.30/x
  3. Step 3: Cross multiply
    126,242.57x = 174,277.88 × 78,511.30
  4. Step 4: Simplify right side
    126,242.57x = 13,682,782,484.35
  5. Step 5: Solve for x
    x = 13,682,782,484.35/126,242.57
  6. Step 6: Final answer
    x = 108,384.85

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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.