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Finding the Fourth Proportional to 108,037.20, 162,201.60 and 85,875.60

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Solution

The fourth proportional to 108,037.20, 162,201.60 and 85,875.60 is: 128,929.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,037.20 : 162,201.60 = 85,875.60 : x
  2. Step 2: Convert to fraction form
    108,037.20/162,201.60 = 85,875.60/x
  3. Step 3: Cross multiply
    108,037.20x = 162,201.60 × 85,875.60
  4. Step 4: Simplify right side
    108,037.20x = 13,929,159,720.96
  5. Step 5: Solve for x
    x = 13,929,159,720.96/108,037.20
  6. Step 6: Final answer
    x = 128,929.29

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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.