Home / 127,371.09-175,727.28-76,400.31

Finding the Fourth Proportional to 127,371.09, 175,727.28 and 76,400.31

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Solution

The fourth proportional to 127,371.09, 175,727.28 and 76,400.31 is: 105,405.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,371.09 : 175,727.28 = 76,400.31 : x
  2. Step 2: Convert to fraction form
    127,371.09/175,727.28 = 76,400.31/x
  3. Step 3: Cross multiply
    127,371.09x = 175,727.28 × 76,400.31
  4. Step 4: Simplify right side
    127,371.09x = 13,425,618,667.46
  5. Step 5: Solve for x
    x = 13,425,618,667.46/127,371.09
  6. Step 6: Final answer
    x = 105,405.54

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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.