Home / 107,788.22-161,765.33-86,779.65

Finding the Fourth Proportional to 107,788.22, 161,765.33 and 86,779.65

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Solution

The fourth proportional to 107,788.22, 161,765.33 and 86,779.65 is: 130,236.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,788.22 : 161,765.33 = 86,779.65 : x
  2. Step 2: Convert to fraction form
    107,788.22/161,765.33 = 86,779.65/x
  3. Step 3: Cross multiply
    107,788.22x = 161,765.33 × 86,779.65
  4. Step 4: Simplify right side
    107,788.22x = 14,037,938,285.64
  5. Step 5: Solve for x
    x = 14,037,938,285.64/107,788.22
  6. Step 6: Final answer
    x = 130,236.30

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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.