Home / 154,412.21-231,658.24-90,424.39

Finding the Fourth Proportional to 154,412.21, 231,658.24 and 90,424.39

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Solution

The fourth proportional to 154,412.21, 231,658.24 and 90,424.39 is: 135,659.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,412.21 : 231,658.24 = 90,424.39 : x
  2. Step 2: Convert to fraction form
    154,412.21/231,658.24 = 90,424.39/x
  3. Step 3: Cross multiply
    154,412.21x = 231,658.24 × 90,424.39
  4. Step 4: Simplify right side
    154,412.21x = 20,947,553,430.06
  5. Step 5: Solve for x
    x = 20,947,553,430.06/154,412.21
  6. Step 6: Final answer
    x = 135,659.96

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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.