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Finding the Fourth Proportional to 120,443.58, 180,830.88 and 61,318.98

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Solution

The fourth proportional to 120,443.58, 180,830.88 and 61,318.98 is: 92,062.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,443.58 : 180,830.88 = 61,318.98 : x
  2. Step 2: Convert to fraction form
    120,443.58/180,830.88 = 61,318.98/x
  3. Step 3: Cross multiply
    120,443.58x = 180,830.88 × 61,318.98
  4. Step 4: Simplify right side
    120,443.58x = 11,088,365,114.10
  5. Step 5: Solve for x
    x = 11,088,365,114.10/120,443.58
  6. Step 6: Final answer
    x = 92,062.73

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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.