Home / 129,805.83-179,148.47-75,346.36

Finding the Fourth Proportional to 129,805.83, 179,148.47 and 75,346.36

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Solution

The fourth proportional to 129,805.83, 179,148.47 and 75,346.36 is: 103,987.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,805.83 : 179,148.47 = 75,346.36 : x
  2. Step 2: Convert to fraction form
    129,805.83/179,148.47 = 75,346.36/x
  3. Step 3: Cross multiply
    129,805.83x = 179,148.47 × 75,346.36
  4. Step 4: Simplify right side
    129,805.83x = 13,498,184,218.33
  5. Step 5: Solve for x
    x = 13,498,184,218.33/129,805.83
  6. Step 6: Final answer
    x = 103,987.50

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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.