Home / 99,683.20-137,564.48-54,361.44

Finding the Fourth Proportional to 99,683.20, 137,564.48 and 54,361.44

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Solution

The fourth proportional to 99,683.20, 137,564.48 and 54,361.44 is: 75,019.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,683.20 : 137,564.48 = 54,361.44 : x
  2. Step 2: Convert to fraction form
    99,683.20/137,564.48 = 54,361.44/x
  3. Step 3: Cross multiply
    99,683.20x = 137,564.48 × 54,361.44
  4. Step 4: Simplify right side
    99,683.20x = 7,478,203,225.65
  5. Step 5: Solve for x
    x = 7,478,203,225.65/99,683.20
  6. Step 6: Final answer
    x = 75,019.69

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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.