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Finding the Fourth Proportional to 108,692.20, 163,038.30 and 99,015.40

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Solution

The fourth proportional to 108,692.20, 163,038.30 and 99,015.40 is: 148,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,692.20 : 163,038.30 = 99,015.40 : x
  2. Step 2: Convert to fraction form
    108,692.20/163,038.30 = 99,015.40/x
  3. Step 3: Cross multiply
    108,692.20x = 163,038.30 × 99,015.40
  4. Step 4: Simplify right side
    108,692.20x = 16,143,302,489.82
  5. Step 5: Solve for x
    x = 16,143,302,489.82/108,692.20
  6. Step 6: Final answer
    x = 148,523.10

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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.