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Finding the Fourth Proportional to 120,027.97, 180,068.74 and 45,148.73

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Solution

The fourth proportional to 120,027.97, 180,068.74 and 45,148.73 is: 67,733.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,027.97 : 180,068.74 = 45,148.73 : x
  2. Step 2: Convert to fraction form
    120,027.97/180,068.74 = 45,148.73/x
  3. Step 3: Cross multiply
    120,027.97x = 180,068.74 × 45,148.73
  4. Step 4: Simplify right side
    120,027.97x = 8,129,875,261.00
  5. Step 5: Solve for x
    x = 8,129,875,261.00/120,027.97
  6. Step 6: Final answer
    x = 67,733.17

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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.