Home / 155,513.43-214,615.37-87,534.80

Finding the Fourth Proportional to 155,513.43, 214,615.37 and 87,534.80

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Solution

The fourth proportional to 155,513.43, 214,615.37 and 87,534.80 is: 120,801.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,513.43 : 214,615.37 = 87,534.80 : x
  2. Step 2: Convert to fraction form
    155,513.43/214,615.37 = 87,534.80/x
  3. Step 3: Cross multiply
    155,513.43x = 214,615.37 × 87,534.80
  4. Step 4: Simplify right side
    155,513.43x = 18,786,311,979.13
  5. Step 5: Solve for x
    x = 18,786,311,979.13/155,513.43
  6. Step 6: Final answer
    x = 120,801.86

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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.