Home / 147,778.28-203,934-80,710.28

Finding the Fourth Proportional to 147,778.28, 203,934 and 80,710.28

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Solution

The fourth proportional to 147,778.28, 203,934 and 80,710.28 is: 111,380.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,778.28 : 203,934 = 80,710.28 : x
  2. Step 2: Convert to fraction form
    147,778.28/203,934 = 80,710.28/x
  3. Step 3: Cross multiply
    147,778.28x = 203,934 × 80,710.28
  4. Step 4: Simplify right side
    147,778.28x = 16,459,570,241.52
  5. Step 5: Solve for x
    x = 16,459,570,241.52/147,778.28
  6. Step 6: Final answer
    x = 111,380.17

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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.