Home / 142,249.46-196,309.90-81,820.04

Finding the Fourth Proportional to 142,249.46, 196,309.90 and 81,820.04

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Solution

The fourth proportional to 142,249.46, 196,309.90 and 81,820.04 is: 112,914.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,249.46 : 196,309.90 = 81,820.04 : x
  2. Step 2: Convert to fraction form
    142,249.46/196,309.90 = 81,820.04/x
  3. Step 3: Cross multiply
    142,249.46x = 196,309.90 × 81,820.04
  4. Step 4: Simplify right side
    142,249.46x = 16,062,083,870.40
  5. Step 5: Solve for x
    x = 16,062,083,870.40/142,249.46
  6. Step 6: Final answer
    x = 112,914.90

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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.