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Finding the Fourth Proportional to 108,108.80, 162,017.40 and 72,468.80

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Solution

The fourth proportional to 108,108.80, 162,017.40 and 72,468.80 is: 108,605.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,108.80 : 162,017.40 = 72,468.80 : x
  2. Step 2: Convert to fraction form
    108,108.80/162,017.40 = 72,468.80/x
  3. Step 3: Cross multiply
    108,108.80x = 162,017.40 × 72,468.80
  4. Step 4: Simplify right side
    108,108.80x = 11,741,206,557.12
  5. Step 5: Solve for x
    x = 11,741,206,557.12/108,108.80
  6. Step 6: Final answer
    x = 108,605.47

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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.