Home / 105,239.20-157,869.36-30,361.20

Finding the Fourth Proportional to 105,239.20, 157,869.36 and 30,361.20

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Solution

The fourth proportional to 105,239.20, 157,869.36 and 30,361.20 is: 45,544.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,239.20 : 157,869.36 = 30,361.20 : x
  2. Step 2: Convert to fraction form
    105,239.20/157,869.36 = 30,361.20/x
  3. Step 3: Cross multiply
    105,239.20x = 157,869.36 × 30,361.20
  4. Step 4: Simplify right side
    105,239.20x = 4,793,103,212.83
  5. Step 5: Solve for x
    x = 4,793,103,212.83/105,239.20
  6. Step 6: Final answer
    x = 45,544.85

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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.