Home / 119,918.75-165,509.54-71,523.78

Finding the Fourth Proportional to 119,918.75, 165,509.54 and 71,523.78

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Solution

The fourth proportional to 119,918.75, 165,509.54 and 71,523.78 is: 98,715.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,918.75 : 165,509.54 = 71,523.78 : x
  2. Step 2: Convert to fraction form
    119,918.75/165,509.54 = 71,523.78/x
  3. Step 3: Cross multiply
    119,918.75x = 165,509.54 × 71,523.78
  4. Step 4: Simplify right side
    119,918.75x = 11,837,867,926.86
  5. Step 5: Solve for x
    x = 11,837,867,926.86/119,918.75
  6. Step 6: Final answer
    x = 98,715.74

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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.