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Finding the Fourth Proportional to 95,998.80, 143,998.20 and 85,501.20

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Solution

The fourth proportional to 95,998.80, 143,998.20 and 85,501.20 is: 128,251.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,998.80 : 143,998.20 = 85,501.20 : x
  2. Step 2: Convert to fraction form
    95,998.80/143,998.20 = 85,501.20/x
  3. Step 3: Cross multiply
    95,998.80x = 143,998.20 × 85,501.20
  4. Step 4: Simplify right side
    95,998.80x = 12,312,018,897.84
  5. Step 5: Solve for x
    x = 12,312,018,897.84/95,998.80
  6. Step 6: Final answer
    x = 128,251.80

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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.