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Finding the Fourth Proportional to 154,039.20, 231,231.60 and 119,133.60

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Solution

The fourth proportional to 154,039.20, 231,231.60 and 119,133.60 is: 178,834.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,039.20 : 231,231.60 = 119,133.60 : x
  2. Step 2: Convert to fraction form
    154,039.20/231,231.60 = 119,133.60/x
  3. Step 3: Cross multiply
    154,039.20x = 231,231.60 × 119,133.60
  4. Step 4: Simplify right side
    154,039.20x = 27,547,452,941.76
  5. Step 5: Solve for x
    x = 27,547,452,941.76/154,039.20
  6. Step 6: Final answer
    x = 178,834.04

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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.