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Finding the Fourth Proportional to 161,912.60, 242,868.90 and 51,104.60

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Solution

The fourth proportional to 161,912.60, 242,868.90 and 51,104.60 is: 76,656.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,912.60 : 242,868.90 = 51,104.60 : x
  2. Step 2: Convert to fraction form
    161,912.60/242,868.90 = 51,104.60/x
  3. Step 3: Cross multiply
    161,912.60x = 242,868.90 × 51,104.60
  4. Step 4: Simplify right side
    161,912.60x = 12,411,717,986.94
  5. Step 5: Solve for x
    x = 12,411,717,986.94/161,912.60
  6. Step 6: Final answer
    x = 76,656.90

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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.