Home / 113,938.99-170,943.09-80,723.32

Finding the Fourth Proportional to 113,938.99, 170,943.09 and 80,723.32

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Solution

The fourth proportional to 113,938.99, 170,943.09 and 80,723.32 is: 121,109.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,938.99 : 170,943.09 = 80,723.32 : x
  2. Step 2: Convert to fraction form
    113,938.99/170,943.09 = 80,723.32/x
  3. Step 3: Cross multiply
    113,938.99x = 170,943.09 × 80,723.32
  4. Step 4: Simplify right side
    113,938.99x = 13,799,093,755.86
  5. Step 5: Solve for x
    x = 13,799,093,755.86/113,938.99
  6. Step 6: Final answer
    x = 121,109.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.