Home / 93,331.20-139,996.80-85,166.40

Finding the Fourth Proportional to 93,331.20, 139,996.80 and 85,166.40

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Solution

The fourth proportional to 93,331.20, 139,996.80 and 85,166.40 is: 127,749.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,331.20 : 139,996.80 = 85,166.40 : x
  2. Step 2: Convert to fraction form
    93,331.20/139,996.80 = 85,166.40/x
  3. Step 3: Cross multiply
    93,331.20x = 139,996.80 × 85,166.40
  4. Step 4: Simplify right side
    93,331.20x = 11,923,023,467.52
  5. Step 5: Solve for x
    x = 11,923,023,467.52/93,331.20
  6. Step 6: Final answer
    x = 127,749.60

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Half scale
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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.