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Finding the Fourth Proportional to 108,958.80, 163,405.80 and 42,360.60

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Solution

The fourth proportional to 108,958.80, 163,405.80 and 42,360.60 is: 63,528.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,958.80 : 163,405.80 = 42,360.60 : x
  2. Step 2: Convert to fraction form
    108,958.80/163,405.80 = 42,360.60/x
  3. Step 3: Cross multiply
    108,958.80x = 163,405.80 × 42,360.60
  4. Step 4: Simplify right side
    108,958.80x = 6,921,967,731.48
  5. Step 5: Solve for x
    x = 6,921,967,731.48/108,958.80
  6. Step 6: Final answer
    x = 63,528.30

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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.