Home / 103,618.35-155,412.07-28,730.68

Finding the Fourth Proportional to 103,618.35, 155,412.07 and 28,730.68

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Solution

The fourth proportional to 103,618.35, 155,412.07 and 28,730.68 is: 43,091.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,618.35 : 155,412.07 = 28,730.68 : x
  2. Step 2: Convert to fraction form
    103,618.35/155,412.07 = 28,730.68/x
  3. Step 3: Cross multiply
    103,618.35x = 155,412.07 × 28,730.68
  4. Step 4: Simplify right side
    103,618.35x = 4,465,094,451.31
  5. Step 5: Solve for x
    x = 4,465,094,451.31/103,618.35
  6. Step 6: Final answer
    x = 43,091.73

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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.