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Finding the Fourth Proportional to 108,103.48, 161,445.48 and 92,138.40

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Solution

The fourth proportional to 108,103.48, 161,445.48 and 92,138.40 is: 137,602.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,103.48 : 161,445.48 = 92,138.40 : x
  2. Step 2: Convert to fraction form
    108,103.48/161,445.48 = 92,138.40/x
  3. Step 3: Cross multiply
    108,103.48x = 161,445.48 × 92,138.40
  4. Step 4: Simplify right side
    108,103.48x = 14,875,328,214.43
  5. Step 5: Solve for x
    x = 14,875,328,214.43/108,103.48
  6. Step 6: Final answer
    x = 137,602.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.