Home / 185,421.21-278,143.55-71,623.29

Finding the Fourth Proportional to 185,421.21, 278,143.55 and 71,623.29

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Solution

The fourth proportional to 185,421.21, 278,143.55 and 71,623.29 is: 107,439.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,421.21 : 278,143.55 = 71,623.29 : x
  2. Step 2: Convert to fraction form
    185,421.21/278,143.55 = 71,623.29/x
  3. Step 3: Cross multiply
    185,421.21x = 278,143.55 × 71,623.29
  4. Step 4: Simplify right side
    185,421.21x = 19,921,556,143.28
  5. Step 5: Solve for x
    x = 19,921,556,143.28/185,421.21
  6. Step 6: Final answer
    x = 107,439.47

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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.