Home / 130,511.34-180,192.33-100,242.54

Finding the Fourth Proportional to 130,511.34, 180,192.33 and 100,242.54

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Solution

The fourth proportional to 130,511.34, 180,192.33 and 100,242.54 is: 138,401.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,511.34 : 180,192.33 = 100,242.54 : x
  2. Step 2: Convert to fraction form
    130,511.34/180,192.33 = 100,242.54/x
  3. Step 3: Cross multiply
    130,511.34x = 180,192.33 × 100,242.54
  4. Step 4: Simplify right side
    130,511.34x = 18,062,936,847.72
  5. Step 5: Solve for x
    x = 18,062,936,847.72/130,511.34
  6. Step 6: Final answer
    x = 138,401.28

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1.5x scale

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.