Home / 90,000.30-134,672.40-82,127.10

Finding the Fourth Proportional to 90,000.30, 134,672.40 and 82,127.10

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Solution

The fourth proportional to 90,000.30, 134,672.40 and 82,127.10 is: 122,891.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,000.30 : 134,672.40 = 82,127.10 : x
  2. Step 2: Convert to fraction form
    90,000.30/134,672.40 = 82,127.10/x
  3. Step 3: Cross multiply
    90,000.30x = 134,672.40 × 82,127.10
  4. Step 4: Simplify right side
    90,000.30x = 11,060,253,662.04
  5. Step 5: Solve for x
    x = 11,060,253,662.04/90,000.30
  6. Step 6: Final answer
    x = 122,891.30

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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.