Home / 185,419.35-278,139.79-71,567.79

Finding the Fourth Proportional to 185,419.35, 278,139.79 and 71,567.79

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Solution

The fourth proportional to 185,419.35, 278,139.79 and 71,567.79 is: 107,355.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,419.35 : 278,139.79 = 71,567.79 : x
  2. Step 2: Convert to fraction form
    185,419.35/278,139.79 = 71,567.79/x
  3. Step 3: Cross multiply
    185,419.35x = 278,139.79 × 71,567.79
  4. Step 4: Simplify right side
    185,419.35x = 19,905,850,081.36
  5. Step 5: Solve for x
    x = 19,905,850,081.36/185,419.35
  6. Step 6: Final answer
    x = 107,355.84

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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.