Home / 108,008.20-162,158.10-85,846.60

Finding the Fourth Proportional to 108,008.20, 162,158.10 and 85,846.60

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Solution

The fourth proportional to 108,008.20, 162,158.10 and 85,846.60 is: 128,885.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,008.20 : 162,158.10 = 85,846.60 : x
  2. Step 2: Convert to fraction form
    108,008.20/162,158.10 = 85,846.60/x
  3. Step 3: Cross multiply
    108,008.20x = 162,158.10 × 85,846.60
  4. Step 4: Simplify right side
    108,008.20x = 13,920,721,547.46
  5. Step 5: Solve for x
    x = 13,920,721,547.46/108,008.20
  6. Step 6: Final answer
    x = 128,885.78

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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.