Home / 78,221.73-117,331.20-19,057.26

Finding the Fourth Proportional to 78,221.73, 117,331.20 and 19,057.26

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Solution

The fourth proportional to 78,221.73, 117,331.20 and 19,057.26 is: 28,585.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,221.73 : 117,331.20 = 19,057.26 : x
  2. Step 2: Convert to fraction form
    78,221.73/117,331.20 = 19,057.26/x
  3. Step 3: Cross multiply
    78,221.73x = 117,331.20 × 19,057.26
  4. Step 4: Simplify right side
    78,221.73x = 2,236,011,184.51
  5. Step 5: Solve for x
    x = 2,236,011,184.51/78,221.73
  6. Step 6: Final answer
    x = 28,585.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.