Home / 103,691.08-155,515.35-28,792.40

Finding the Fourth Proportional to 103,691.08, 155,515.35 and 28,792.40

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Solution

The fourth proportional to 103,691.08, 155,515.35 and 28,792.40 is: 43,182.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,691.08 : 155,515.35 = 28,792.40 : x
  2. Step 2: Convert to fraction form
    103,691.08/155,515.35 = 28,792.40/x
  3. Step 3: Cross multiply
    103,691.08x = 155,515.35 × 28,792.40
  4. Step 4: Simplify right side
    103,691.08x = 4,477,660,163.34
  5. Step 5: Solve for x
    x = 4,477,660,163.34/103,691.08
  6. Step 6: Final answer
    x = 43,182.69

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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.