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Finding the Fourth Proportional to 108,692.72, 150,008.45 and 72,392.16

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Solution

The fourth proportional to 108,692.72, 150,008.45 and 72,392.16 is: 99,909.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,692.72 : 150,008.45 = 72,392.16 : x
  2. Step 2: Convert to fraction form
    108,692.72/150,008.45 = 72,392.16/x
  3. Step 3: Cross multiply
    108,692.72x = 150,008.45 × 72,392.16
  4. Step 4: Simplify right side
    108,692.72x = 10,859,435,713.75
  5. Step 5: Solve for x
    x = 10,859,435,713.75/108,692.72
  6. Step 6: Final answer
    x = 99,909.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.