Home / 103,690.08-155,513.85-28,791.40

Finding the Fourth Proportional to 103,690.08, 155,513.85 and 28,791.40

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Solution

The fourth proportional to 103,690.08, 155,513.85 and 28,791.40 is: 43,181.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,690.08 : 155,513.85 = 28,791.40 : x
  2. Step 2: Convert to fraction form
    103,690.08/155,513.85 = 28,791.40/x
  3. Step 3: Cross multiply
    103,690.08x = 155,513.85 × 28,791.40
  4. Step 4: Simplify right side
    103,690.08x = 4,477,461,460.89
  5. Step 5: Solve for x
    x = 4,477,461,460.89/103,690.08
  6. Step 6: Final answer
    x = 43,181.19

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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.