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Finding the Fourth Proportional to 108,959.80, 163,407.30 and 42,361.60

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Solution

The fourth proportional to 108,959.80, 163,407.30 and 42,361.60 is: 63,529.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,959.80 : 163,407.30 = 42,361.60 : x
  2. Step 2: Convert to fraction form
    108,959.80/163,407.30 = 42,361.60/x
  3. Step 3: Cross multiply
    108,959.80x = 163,407.30 × 42,361.60
  4. Step 4: Simplify right side
    108,959.80x = 6,922,194,679.68
  5. Step 5: Solve for x
    x = 6,922,194,679.68/108,959.80
  6. Step 6: Final answer
    x = 63,529.80

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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.