Home / 130,591.21-180,149.54-85,295.70

Finding the Fourth Proportional to 130,591.21, 180,149.54 and 85,295.70

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Solution

The fourth proportional to 130,591.21, 180,149.54 and 85,295.70 is: 117,664.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,591.21 : 180,149.54 = 85,295.70 : x
  2. Step 2: Convert to fraction form
    130,591.21/180,149.54 = 85,295.70/x
  3. Step 3: Cross multiply
    130,591.21x = 180,149.54 × 85,295.70
  4. Step 4: Simplify right side
    130,591.21x = 15,365,980,692.50
  5. Step 5: Solve for x
    x = 15,365,980,692.50/130,591.21
  6. Step 6: Final answer
    x = 117,664.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.