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Finding the Fourth Proportional to 124,469.99, 171,742.81 and 72,777.14

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Solution

The fourth proportional to 124,469.99, 171,742.81 and 72,777.14 is: 100,417.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,469.99 : 171,742.81 = 72,777.14 : x
  2. Step 2: Convert to fraction form
    124,469.99/171,742.81 = 72,777.14/x
  3. Step 3: Cross multiply
    124,469.99x = 171,742.81 × 72,777.14
  4. Step 4: Simplify right side
    124,469.99x = 12,498,950,527.36
  5. Step 5: Solve for x
    x = 12,498,950,527.36/124,469.99
  6. Step 6: Final answer
    x = 100,417.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.