Home / 129,888.07-179,275.42-76,190.39

Finding the Fourth Proportional to 129,888.07, 179,275.42 and 76,190.39

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Solution

The fourth proportional to 129,888.07, 179,275.42 and 76,190.39 is: 105,160.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,888.07 : 179,275.42 = 76,190.39 : x
  2. Step 2: Convert to fraction form
    129,888.07/179,275.42 = 76,190.39/x
  3. Step 3: Cross multiply
    129,888.07x = 179,275.42 × 76,190.39
  4. Step 4: Simplify right side
    129,888.07x = 13,659,064,167.21
  5. Step 5: Solve for x
    x = 13,659,064,167.21/129,888.07
  6. Step 6: Final answer
    x = 105,160.27

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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.