Home / 100,328.90-150,479.47-55,433.19

Finding the Fourth Proportional to 100,328.90, 150,479.47 and 55,433.19

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Solution

The fourth proportional to 100,328.90, 150,479.47 and 55,433.19 is: 83,142.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,328.90 : 150,479.47 = 55,433.19 : x
  2. Step 2: Convert to fraction form
    100,328.90/150,479.47 = 55,433.19/x
  3. Step 3: Cross multiply
    100,328.90x = 150,479.47 × 55,433.19
  4. Step 4: Simplify right side
    100,328.90x = 8,341,557,685.20
  5. Step 5: Solve for x
    x = 8,341,557,685.20/100,328.90
  6. Step 6: Final answer
    x = 83,142.13

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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.