Home / 129,762.42-179,072.28-76,036.74

Finding the Fourth Proportional to 129,762.42, 179,072.28 and 76,036.74

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Solution

The fourth proportional to 129,762.42, 179,072.28 and 76,036.74 is: 104,930.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,762.42 : 179,072.28 = 76,036.74 : x
  2. Step 2: Convert to fraction form
    129,762.42/179,072.28 = 76,036.74/x
  3. Step 3: Cross multiply
    129,762.42x = 179,072.28 × 76,036.74
  4. Step 4: Simplify right side
    129,762.42x = 13,616,072,395.57
  5. Step 5: Solve for x
    x = 13,616,072,395.57/129,762.42
  6. Step 6: Final answer
    x = 104,930.78

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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.