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Finding the Fourth Proportional to 119,231.80, 178,847.70 and 77,241.40

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Solution

The fourth proportional to 119,231.80, 178,847.70 and 77,241.40 is: 115,862.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,231.80 : 178,847.70 = 77,241.40 : x
  2. Step 2: Convert to fraction form
    119,231.80/178,847.70 = 77,241.40/x
  3. Step 3: Cross multiply
    119,231.80x = 178,847.70 × 77,241.40
  4. Step 4: Simplify right side
    119,231.80x = 13,814,446,734.78
  5. Step 5: Solve for x
    x = 13,814,446,734.78/119,231.80
  6. Step 6: Final answer
    x = 115,862.10

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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.