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Finding the Fourth Proportional to 108,907.80, 163,361.70 and 38,866.20

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Solution

The fourth proportional to 108,907.80, 163,361.70 and 38,866.20 is: 58,299.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,907.80 : 163,361.70 = 38,866.20 : x
  2. Step 2: Convert to fraction form
    108,907.80/163,361.70 = 38,866.20/x
  3. Step 3: Cross multiply
    108,907.80x = 163,361.70 × 38,866.20
  4. Step 4: Simplify right side
    108,907.80x = 6,349,248,504.54
  5. Step 5: Solve for x
    x = 6,349,248,504.54/108,907.80
  6. Step 6: Final answer
    x = 58,299.30

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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.