Home / 129,772.22-179,089.95-75,320.31

Finding the Fourth Proportional to 129,772.22, 179,089.95 and 75,320.31

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Solution

The fourth proportional to 129,772.22, 179,089.95 and 75,320.31 is: 103,944.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,772.22 : 179,089.95 = 75,320.31 : x
  2. Step 2: Convert to fraction form
    129,772.22/179,089.95 = 75,320.31/x
  3. Step 3: Cross multiply
    129,772.22x = 179,089.95 × 75,320.31
  4. Step 4: Simplify right side
    129,772.22x = 13,489,110,551.88
  5. Step 5: Solve for x
    x = 13,489,110,551.88/129,772.22
  6. Step 6: Final answer
    x = 103,944.52

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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.