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Finding the Fourth Proportional to 99,974.80, 149,962.20 and 26,102.80

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Solution

The fourth proportional to 99,974.80, 149,962.20 and 26,102.80 is: 39,154.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,974.80 : 149,962.20 = 26,102.80 : x
  2. Step 2: Convert to fraction form
    99,974.80/149,962.20 = 26,102.80/x
  3. Step 3: Cross multiply
    99,974.80x = 149,962.20 × 26,102.80
  4. Step 4: Simplify right side
    99,974.80x = 3,914,433,314.16
  5. Step 5: Solve for x
    x = 3,914,433,314.16/99,974.80
  6. Step 6: Final answer
    x = 39,154.20

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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.