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Finding the Fourth Proportional to 154,230.80, 230,885.40 and 91,869.20

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Solution

The fourth proportional to 154,230.80, 230,885.40 and 91,869.20 is: 137,529.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,230.80 : 230,885.40 = 91,869.20 : x
  2. Step 2: Convert to fraction form
    154,230.80/230,885.40 = 91,869.20/x
  3. Step 3: Cross multiply
    154,230.80x = 230,885.40 × 91,869.20
  4. Step 4: Simplify right side
    154,230.80x = 21,211,256,989.68
  5. Step 5: Solve for x
    x = 21,211,256,989.68/154,230.80
  6. Step 6: Final answer
    x = 137,529.32

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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.