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Finding the Fourth Proportional to 99,892.80, 149,839.20 and 55,498.32

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Solution

The fourth proportional to 99,892.80, 149,839.20 and 55,498.32 is: 83,247.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,892.80 : 149,839.20 = 55,498.32 : x
  2. Step 2: Convert to fraction form
    99,892.80/149,839.20 = 55,498.32/x
  3. Step 3: Cross multiply
    99,892.80x = 149,839.20 × 55,498.32
  4. Step 4: Simplify right side
    99,892.80x = 8,315,823,870.14
  5. Step 5: Solve for x
    x = 8,315,823,870.14/99,892.80
  6. Step 6: Final answer
    x = 83,247.48

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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.