Home / 102,910.90-154,366.35-85,998.10

Finding the Fourth Proportional to 102,910.90, 154,366.35 and 85,998.10

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Solution

The fourth proportional to 102,910.90, 154,366.35 and 85,998.10 is: 128,997.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,910.90 : 154,366.35 = 85,998.10 : x
  2. Step 2: Convert to fraction form
    102,910.90/154,366.35 = 85,998.10/x
  3. Step 3: Cross multiply
    102,910.90x = 154,366.35 × 85,998.10
  4. Step 4: Simplify right side
    102,910.90x = 13,275,212,803.94
  5. Step 5: Solve for x
    x = 13,275,212,803.94/102,910.90
  6. Step 6: Final answer
    x = 128,997.15

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Double scale
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Similar ratio
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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.