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Finding the Fourth Proportional to 154,701.60, 231,745.20 and 84,455.20

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Solution

The fourth proportional to 154,701.60, 231,745.20 and 84,455.20 is: 126,515.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,701.60 : 231,745.20 = 84,455.20 : x
  2. Step 2: Convert to fraction form
    154,701.60/231,745.20 = 84,455.20/x
  3. Step 3: Cross multiply
    154,701.60x = 231,745.20 × 84,455.20
  4. Step 4: Simplify right side
    154,701.60x = 19,572,087,215.04
  5. Step 5: Solve for x
    x = 19,572,087,215.04/154,701.60
  6. Step 6: Final answer
    x = 126,515.09

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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.