Home / 152,021.24-209,779.28-87,480.05

Finding the Fourth Proportional to 152,021.24, 209,779.28 and 87,480.05

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Solution

The fourth proportional to 152,021.24, 209,779.28 and 87,480.05 is: 120,716.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,021.24 : 209,779.28 = 87,480.05 : x
  2. Step 2: Convert to fraction form
    152,021.24/209,779.28 = 87,480.05/x
  3. Step 3: Cross multiply
    152,021.24x = 209,779.28 × 87,480.05
  4. Step 4: Simplify right side
    152,021.24x = 18,351,500,745.12
  5. Step 5: Solve for x
    x = 18,351,500,745.12/152,021.24
  6. Step 6: Final answer
    x = 120,716.69

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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.