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Finding the Fourth Proportional to 99,998.40, 149,999.20 and 26,126.40

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Solution

The fourth proportional to 99,998.40, 149,999.20 and 26,126.40 is: 39,190.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,998.40 : 149,999.20 = 26,126.40 : x
  2. Step 2: Convert to fraction form
    99,998.40/149,999.20 = 26,126.40/x
  3. Step 3: Cross multiply
    99,998.40x = 149,999.20 × 26,126.40
  4. Step 4: Simplify right side
    99,998.40x = 3,918,939,098.88
  5. Step 5: Solve for x
    x = 3,918,939,098.88/99,998.40
  6. Step 6: Final answer
    x = 39,190.02

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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.