Home / 154,000.40-231,000.60-87,645.20

Finding the Fourth Proportional to 154,000.40, 231,000.60 and 87,645.20

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Solution

The fourth proportional to 154,000.40, 231,000.60 and 87,645.20 is: 131,467.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,000.40 : 231,000.60 = 87,645.20 : x
  2. Step 2: Convert to fraction form
    154,000.40/231,000.60 = 87,645.20/x
  3. Step 3: Cross multiply
    154,000.40x = 231,000.60 × 87,645.20
  4. Step 4: Simplify right side
    154,000.40x = 20,246,093,787.12
  5. Step 5: Solve for x
    x = 20,246,093,787.12/154,000.40
  6. Step 6: Final answer
    x = 131,467.80

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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.