Home / 90,000.30-135,000.45-60,257.10

Finding the Fourth Proportional to 90,000.30, 135,000.45 and 60,257.10

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Solution

The fourth proportional to 90,000.30, 135,000.45 and 60,257.10 is: 90,385.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,000.30 : 135,000.45 = 60,257.10 : x
  2. Step 2: Convert to fraction form
    90,000.30/135,000.45 = 60,257.10/x
  3. Step 3: Cross multiply
    90,000.30x = 135,000.45 × 60,257.10
  4. Step 4: Simplify right side
    90,000.30x = 8,134,735,615.70
  5. Step 5: Solve for x
    x = 8,134,735,615.70/90,000.30
  6. Step 6: Final answer
    x = 90,385.65

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Double scale
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Similar ratio
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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.