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Finding the Fourth Proportional to 108,138.60, 149,230.62 and 60,392.04

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Solution

The fourth proportional to 108,138.60, 149,230.62 and 60,392.04 is: 83,340.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,138.60 : 149,230.62 = 60,392.04 : x
  2. Step 2: Convert to fraction form
    108,138.60/149,230.62 = 60,392.04/x
  3. Step 3: Cross multiply
    108,138.60x = 149,230.62 × 60,392.04
  4. Step 4: Simplify right side
    108,138.60x = 9,012,341,572.26
  5. Step 5: Solve for x
    x = 9,012,341,572.26/108,138.60
  6. Step 6: Final answer
    x = 83,340.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.