Home / 130,642.66-180,292.80-76,929.94

Finding the Fourth Proportional to 130,642.66, 180,292.80 and 76,929.94

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Solution

The fourth proportional to 130,642.66, 180,292.80 and 76,929.94 is: 106,166.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,642.66 : 180,292.80 = 76,929.94 : x
  2. Step 2: Convert to fraction form
    130,642.66/180,292.80 = 76,929.94/x
  3. Step 3: Cross multiply
    130,642.66x = 180,292.80 × 76,929.94
  4. Step 4: Simplify right side
    130,642.66x = 13,869,914,286.43
  5. Step 5: Solve for x
    x = 13,869,914,286.43/130,642.66
  6. Step 6: Final answer
    x = 106,166.81

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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.