Home / 125,779.20-188,467.20-66,537.60

Finding the Fourth Proportional to 125,779.20, 188,467.20 and 66,537.60

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Solution

The fourth proportional to 125,779.20, 188,467.20 and 66,537.60 is: 99,699.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,779.20 : 188,467.20 = 66,537.60 : x
  2. Step 2: Convert to fraction form
    125,779.20/188,467.20 = 66,537.60/x
  3. Step 3: Cross multiply
    125,779.20x = 188,467.20 × 66,537.60
  4. Step 4: Simplify right side
    125,779.20x = 12,540,155,166.72
  5. Step 5: Solve for x
    x = 12,540,155,166.72/125,779.20
  6. Step 6: Final answer
    x = 99,699.75

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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.