Home / 103,742.25-155,613.51-28,862.40

Finding the Fourth Proportional to 103,742.25, 155,613.51 and 28,862.40

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Solution

The fourth proportional to 103,742.25, 155,613.51 and 28,862.40 is: 43,293.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,742.25 : 155,613.51 = 28,862.40 : x
  2. Step 2: Convert to fraction form
    103,742.25/155,613.51 = 28,862.40/x
  3. Step 3: Cross multiply
    103,742.25x = 155,613.51 × 28,862.40
  4. Step 4: Simplify right side
    103,742.25x = 4,491,379,371.02
  5. Step 5: Solve for x
    x = 4,491,379,371.02/103,742.25
  6. Step 6: Final answer
    x = 43,293.64

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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.