Home / 185,421.75-278,143.39-71,570.21

Finding the Fourth Proportional to 185,421.75, 278,143.39 and 71,570.21

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Solution

The fourth proportional to 185,421.75, 278,143.39 and 71,570.21 is: 107,359.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,421.75 : 278,143.39 = 71,570.21 : x
  2. Step 2: Convert to fraction form
    185,421.75/278,143.39 = 71,570.21/x
  3. Step 3: Cross multiply
    185,421.75x = 278,143.39 × 71,570.21
  4. Step 4: Simplify right side
    185,421.75x = 19,906,779,910.85
  5. Step 5: Solve for x
    x = 19,906,779,910.85/185,421.75
  6. Step 6: Final answer
    x = 107,359.47

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1.5x scale

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.