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Finding the Fourth Proportional to 99,539.80, 149,309.70 and 37,202.20

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Solution

The fourth proportional to 99,539.80, 149,309.70 and 37,202.20 is: 55,803.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,539.80 : 149,309.70 = 37,202.20 : x
  2. Step 2: Convert to fraction form
    99,539.80/149,309.70 = 37,202.20/x
  3. Step 3: Cross multiply
    99,539.80x = 149,309.70 × 37,202.20
  4. Step 4: Simplify right side
    99,539.80x = 5,554,649,321.34
  5. Step 5: Solve for x
    x = 5,554,649,321.34/99,539.80
  6. Step 6: Final answer
    x = 55,803.30

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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.