Home / 223,749.18-308,779.56-121,780.17

Finding the Fourth Proportional to 223,749.18, 308,779.56 and 121,780.17

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Solution

The fourth proportional to 223,749.18, 308,779.56 and 121,780.17 is: 168,059.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,749.18 : 308,779.56 = 121,780.17 : x
  2. Step 2: Convert to fraction form
    223,749.18/308,779.56 = 121,780.17/x
  3. Step 3: Cross multiply
    223,749.18x = 308,779.56 × 121,780.17
  4. Step 4: Simplify right side
    223,749.18x = 37,603,227,309.33
  5. Step 5: Solve for x
    x = 37,603,227,309.33/223,749.18
  6. Step 6: Final answer
    x = 168,059.73

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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.