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Finding the Fourth Proportional to 108,695.70, 163,043.55 and 67,223.70

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Solution

The fourth proportional to 108,695.70, 163,043.55 and 67,223.70 is: 100,835.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,695.70 : 163,043.55 = 67,223.70 : x
  2. Step 2: Convert to fraction form
    108,695.70/163,043.55 = 67,223.70/x
  3. Step 3: Cross multiply
    108,695.70x = 163,043.55 × 67,223.70
  4. Step 4: Simplify right side
    108,695.70x = 10,960,390,692.14
  5. Step 5: Solve for x
    x = 10,960,390,692.14/108,695.70
  6. Step 6: Final answer
    x = 100,835.55

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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.