Home / 150,638.13-207,899.06-86,975.78

Finding the Fourth Proportional to 150,638.13, 207,899.06 and 86,975.78

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Solution

The fourth proportional to 150,638.13, 207,899.06 and 86,975.78 is: 120,037.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,638.13 : 207,899.06 = 86,975.78 : x
  2. Step 2: Convert to fraction form
    150,638.13/207,899.06 = 86,975.78/x
  3. Step 3: Cross multiply
    150,638.13x = 207,899.06 × 86,975.78
  4. Step 4: Simplify right side
    150,638.13x = 18,082,181,430.39
  5. Step 5: Solve for x
    x = 18,082,181,430.39/150,638.13
  6. Step 6: Final answer
    x = 120,037.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.