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Finding the Fourth Proportional to 120,197.58, 180,384.95 and 57,017.89

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Solution

The fourth proportional to 120,197.58, 180,384.95 and 57,017.89 is: 85,568.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,197.58 : 180,384.95 = 57,017.89 : x
  2. Step 2: Convert to fraction form
    120,197.58/180,384.95 = 57,017.89/x
  3. Step 3: Cross multiply
    120,197.58x = 180,384.95 × 57,017.89
  4. Step 4: Simplify right side
    120,197.58x = 10,285,169,236.76
  5. Step 5: Solve for x
    x = 10,285,169,236.76/120,197.58
  6. Step 6: Final answer
    x = 85,568.85

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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.