Home / 161,511.20-242,169.60-82,779.20

Finding the Fourth Proportional to 161,511.20, 242,169.60 and 82,779.20

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Solution

The fourth proportional to 161,511.20, 242,169.60 and 82,779.20 is: 124,118.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,511.20 : 242,169.60 = 82,779.20 : x
  2. Step 2: Convert to fraction form
    161,511.20/242,169.60 = 82,779.20/x
  3. Step 3: Cross multiply
    161,511.20x = 242,169.60 × 82,779.20
  4. Step 4: Simplify right side
    161,511.20x = 20,046,605,752.32
  5. Step 5: Solve for x
    x = 20,046,605,752.32/161,511.20
  6. Step 6: Final answer
    x = 124,118.98

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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.