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Finding the Fourth Proportional to 108,636.60, 162,954.90 and 99,305.40

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Solution

The fourth proportional to 108,636.60, 162,954.90 and 99,305.40 is: 148,958.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,636.60 : 162,954.90 = 99,305.40 : x
  2. Step 2: Convert to fraction form
    108,636.60/162,954.90 = 99,305.40/x
  3. Step 3: Cross multiply
    108,636.60x = 162,954.90 × 99,305.40
  4. Step 4: Simplify right side
    108,636.60x = 16,182,301,526.46
  5. Step 5: Solve for x
    x = 16,182,301,526.46/108,636.60
  6. Step 6: Final answer
    x = 148,958.10

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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.