Home / 124,221.48-171,449.91-78,952.20

Finding the Fourth Proportional to 124,221.48, 171,449.91 and 78,952.20

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Solution

The fourth proportional to 124,221.48, 171,449.91 and 78,952.20 is: 108,969.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,221.48 : 171,449.91 = 78,952.20 : x
  2. Step 2: Convert to fraction form
    124,221.48/171,449.91 = 78,952.20/x
  3. Step 3: Cross multiply
    124,221.48x = 171,449.91 × 78,952.20
  4. Step 4: Simplify right side
    124,221.48x = 13,536,347,584.30
  5. Step 5: Solve for x
    x = 13,536,347,584.30/124,221.48
  6. Step 6: Final answer
    x = 108,969.46

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1.5x scale

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.