Home / 185,421.71-278,144.31-71,623.80

Finding the Fourth Proportional to 185,421.71, 278,144.31 and 71,623.80

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Solution

The fourth proportional to 185,421.71, 278,144.31 and 71,623.80 is: 107,440.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,421.71 : 278,144.31 = 71,623.80 : x
  2. Step 2: Convert to fraction form
    185,421.71/278,144.31 = 71,623.80/x
  3. Step 3: Cross multiply
    185,421.71x = 278,144.31 × 71,623.80
  4. Step 4: Simplify right side
    185,421.71x = 19,921,752,430.58
  5. Step 5: Solve for x
    x = 19,921,752,430.58/185,421.71
  6. Step 6: Final answer
    x = 107,440.24

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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.