Home / 175,040.80-262,100.40-128,039.20

Finding the Fourth Proportional to 175,040.80, 262,100.40 and 128,039.20

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Solution

The fourth proportional to 175,040.80, 262,100.40 and 128,039.20 is: 191,721.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,040.80 : 262,100.40 = 128,039.20 : x
  2. Step 2: Convert to fraction form
    175,040.80/262,100.40 = 128,039.20/x
  3. Step 3: Cross multiply
    175,040.80x = 262,100.40 × 128,039.20
  4. Step 4: Simplify right side
    175,040.80x = 33,559,125,535.68
  5. Step 5: Solve for x
    x = 33,559,125,535.68/175,040.80
  6. Step 6: Final answer
    x = 191,721.73

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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.