Home / 108,005.20-162,007.80-99,475.90

Finding the Fourth Proportional to 108,005.20, 162,007.80 and 99,475.90

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Solution

The fourth proportional to 108,005.20, 162,007.80 and 99,475.90 is: 149,213.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,005.20 : 162,007.80 = 99,475.90 : x
  2. Step 2: Convert to fraction form
    108,005.20/162,007.80 = 99,475.90/x
  3. Step 3: Cross multiply
    108,005.20x = 162,007.80 × 99,475.90
  4. Step 4: Simplify right side
    108,005.20x = 16,115,871,712.02
  5. Step 5: Solve for x
    x = 16,115,871,712.02/108,005.20
  6. Step 6: Final answer
    x = 149,213.85

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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.