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Finding the Fourth Proportional to 154,424.80, 231,464.40 and 87,896.80

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Solution

The fourth proportional to 154,424.80, 231,464.40 and 87,896.80 is: 131,746.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,424.80 : 231,464.40 = 87,896.80 : x
  2. Step 2: Convert to fraction form
    154,424.80/231,464.40 = 87,896.80/x
  3. Step 3: Cross multiply
    154,424.80x = 231,464.40 × 87,896.80
  4. Step 4: Simplify right side
    154,424.80x = 20,344,980,073.92
  5. Step 5: Solve for x
    x = 20,344,980,073.92/154,424.80
  6. Step 6: Final answer
    x = 131,746.84

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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.