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Finding the Fourth Proportional to 108,612.20, 162,918.30 and 64,216.10

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Solution

The fourth proportional to 108,612.20, 162,918.30 and 64,216.10 is: 96,324.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,612.20 : 162,918.30 = 64,216.10 : x
  2. Step 2: Convert to fraction form
    108,612.20/162,918.30 = 64,216.10/x
  3. Step 3: Cross multiply
    108,612.20x = 162,918.30 × 64,216.10
  4. Step 4: Simplify right side
    108,612.20x = 10,461,977,844.63
  5. Step 5: Solve for x
    x = 10,461,977,844.63/108,612.20
  6. Step 6: Final answer
    x = 96,324.15

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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.