Home / 145,361.21-218,134.15-75,240.52

Finding the Fourth Proportional to 145,361.21, 218,134.15 and 75,240.52

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Solution

The fourth proportional to 145,361.21, 218,134.15 and 75,240.52 is: 112,908.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,361.21 : 218,134.15 = 75,240.52 : x
  2. Step 2: Convert to fraction form
    145,361.21/218,134.15 = 75,240.52/x
  3. Step 3: Cross multiply
    145,361.21x = 218,134.15 × 75,240.52
  4. Step 4: Simplify right side
    145,361.21x = 16,412,526,142.32
  5. Step 5: Solve for x
    x = 16,412,526,142.32/145,361.21
  6. Step 6: Final answer
    x = 112,908.57

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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.