Home / 130,542.97-180,135.75-76,824.78

Finding the Fourth Proportional to 130,542.97, 180,135.75 and 76,824.78

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Solution

The fourth proportional to 130,542.97, 180,135.75 and 76,824.78 is: 106,010.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,542.97 : 180,135.75 = 76,824.78 : x
  2. Step 2: Convert to fraction form
    130,542.97/180,135.75 = 76,824.78/x
  3. Step 3: Cross multiply
    130,542.97x = 180,135.75 × 76,824.78
  4. Step 4: Simplify right side
    130,542.97x = 13,838,888,979.76
  5. Step 5: Solve for x
    x = 13,838,888,979.76/130,542.97
  6. Step 6: Final answer
    x = 106,010.22

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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.