Home / 90,285.70-135,636.18-63,692.86

Finding the Fourth Proportional to 90,285.70, 135,636.18 and 63,692.86

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Solution

The fourth proportional to 90,285.70, 135,636.18 and 63,692.86 is: 95,685.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,285.70 : 135,636.18 = 63,692.86 : x
  2. Step 2: Convert to fraction form
    90,285.70/135,636.18 = 63,692.86/x
  3. Step 3: Cross multiply
    90,285.70x = 135,636.18 × 63,692.86
  4. Step 4: Simplify right side
    90,285.70x = 8,639,056,223.67
  5. Step 5: Solve for x
    x = 8,639,056,223.67/90,285.70
  6. Step 6: Final answer
    x = 95,685.76

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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.