Home / 103,638.03-155,457.03-28,758.18

Finding the Fourth Proportional to 103,638.03, 155,457.03 and 28,758.18

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Solution

The fourth proportional to 103,638.03, 155,457.03 and 28,758.18 is: 43,137.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.03 : 155,457.03 = 28,758.18 : x
  2. Step 2: Convert to fraction form
    103,638.03/155,457.03 = 28,758.18/x
  3. Step 3: Cross multiply
    103,638.03x = 155,457.03 × 28,758.18
  4. Step 4: Simplify right side
    103,638.03x = 4,470,661,251.01
  5. Step 5: Solve for x
    x = 4,470,661,251.01/103,638.03
  6. Step 6: Final answer
    x = 43,137.27

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1.5x scale

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.