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Finding the Fourth Proportional to 108,960.80, 163,408.80 and 42,362.60

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Solution

The fourth proportional to 108,960.80, 163,408.80 and 42,362.60 is: 63,531.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,960.80 : 163,408.80 = 42,362.60 : x
  2. Step 2: Convert to fraction form
    108,960.80/163,408.80 = 42,362.60/x
  3. Step 3: Cross multiply
    108,960.80x = 163,408.80 × 42,362.60
  4. Step 4: Simplify right side
    108,960.80x = 6,922,421,630.88
  5. Step 5: Solve for x
    x = 6,922,421,630.88/108,960.80
  6. Step 6: Final answer
    x = 63,531.30

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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.