Home / 127,128.39-175,471.21-79,352.97

Finding the Fourth Proportional to 127,128.39, 175,471.21 and 79,352.97

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Solution

The fourth proportional to 127,128.39, 175,471.21 and 79,352.97 is: 109,528.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,128.39 : 175,471.21 = 79,352.97 : x
  2. Step 2: Convert to fraction form
    127,128.39/175,471.21 = 79,352.97/x
  3. Step 3: Cross multiply
    127,128.39x = 175,471.21 × 79,352.97
  4. Step 4: Simplify right side
    127,128.39x = 13,924,161,662.99
  5. Step 5: Solve for x
    x = 13,924,161,662.99/127,128.39
  6. Step 6: Final answer
    x = 109,528.34

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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.