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Finding the Fourth Proportional to 120,440.60, 180,315.30 and 73,784.60

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Solution

The fourth proportional to 120,440.60, 180,315.30 and 73,784.60 is: 110,465.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,440.60 : 180,315.30 = 73,784.60 : x
  2. Step 2: Convert to fraction form
    120,440.60/180,315.30 = 73,784.60/x
  3. Step 3: Cross multiply
    120,440.60x = 180,315.30 × 73,784.60
  4. Step 4: Simplify right side
    120,440.60x = 13,304,492,284.38
  5. Step 5: Solve for x
    x = 13,304,492,284.38/120,440.60
  6. Step 6: Final answer
    x = 110,465.18

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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.