Home / 129,802.22-179,129.40-76,125.95

Finding the Fourth Proportional to 129,802.22, 179,129.40 and 76,125.95

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Solution

The fourth proportional to 129,802.22, 179,129.40 and 76,125.95 is: 105,055.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,802.22 : 179,129.40 = 76,125.95 : x
  2. Step 2: Convert to fraction form
    129,802.22/179,129.40 = 76,125.95/x
  3. Step 3: Cross multiply
    129,802.22x = 179,129.40 × 76,125.95
  4. Step 4: Simplify right side
    129,802.22x = 13,636,395,747.93
  5. Step 5: Solve for x
    x = 13,636,395,747.93/129,802.22
  6. Step 6: Final answer
    x = 105,055.18

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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.