Home / 130,481.93-180,151.81-100,213.18

Finding the Fourth Proportional to 130,481.93, 180,151.81 and 100,213.18

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Solution

The fourth proportional to 130,481.93, 180,151.81 and 100,213.18 is: 138,360.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,481.93 : 180,151.81 = 100,213.18 : x
  2. Step 2: Convert to fraction form
    130,481.93/180,151.81 = 100,213.18/x
  3. Step 3: Cross multiply
    130,481.93x = 180,151.81 × 100,213.18
  4. Step 4: Simplify right side
    130,481.93x = 18,053,585,061.94
  5. Step 5: Solve for x
    x = 18,053,585,061.94/130,481.93
  6. Step 6: Final answer
    x = 138,360.80

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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.