Home / 80,211.84-120,315.36-38,122.32

Finding the Fourth Proportional to 80,211.84, 120,315.36 and 38,122.32

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Solution

The fourth proportional to 80,211.84, 120,315.36 and 38,122.32 is: 57,182.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,211.84 : 120,315.36 = 38,122.32 : x
  2. Step 2: Convert to fraction form
    80,211.84/120,315.36 = 38,122.32/x
  3. Step 3: Cross multiply
    80,211.84x = 120,315.36 × 38,122.32
  4. Step 4: Simplify right side
    80,211.84x = 4,586,700,654.84
  5. Step 5: Solve for x
    x = 4,586,700,654.84/80,211.84
  6. Step 6: Final answer
    x = 57,182.34

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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.