Home / 113,021.76-155,998.32-65,302.80

Finding the Fourth Proportional to 113,021.76, 155,998.32 and 65,302.80

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Solution

The fourth proportional to 113,021.76, 155,998.32 and 65,302.80 is: 90,134.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,021.76 : 155,998.32 = 65,302.80 : x
  2. Step 2: Convert to fraction form
    113,021.76/155,998.32 = 65,302.80/x
  3. Step 3: Cross multiply
    113,021.76x = 155,998.32 × 65,302.80
  4. Step 4: Simplify right side
    113,021.76x = 10,187,127,091.30
  5. Step 5: Solve for x
    x = 10,187,127,091.30/113,021.76
  6. Step 6: Final answer
    x = 90,134.21

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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.