Home / 103,830.13-155,758.10-40,642.03

Finding the Fourth Proportional to 103,830.13, 155,758.10 and 40,642.03

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Solution

The fourth proportional to 103,830.13, 155,758.10 and 40,642.03 is: 60,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,830.13 : 155,758.10 = 40,642.03 : x
  2. Step 2: Convert to fraction form
    103,830.13/155,758.10 = 40,642.03/x
  3. Step 3: Cross multiply
    103,830.13x = 155,758.10 × 40,642.03
  4. Step 4: Simplify right side
    103,830.13x = 6,330,325,372.94
  5. Step 5: Solve for x
    x = 6,330,325,372.94/103,830.13
  6. Step 6: Final answer
    x = 60,968.10

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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.