Home / 185,705.18-278,668.43-67,385.74

Finding the Fourth Proportional to 185,705.18, 278,668.43 and 67,385.74

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Solution

The fourth proportional to 185,705.18, 278,668.43 and 67,385.74 is: 101,118.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,705.18 : 278,668.43 = 67,385.74 : x
  2. Step 2: Convert to fraction form
    185,705.18/278,668.43 = 67,385.74/x
  3. Step 3: Cross multiply
    185,705.18x = 278,668.43 × 67,385.74
  4. Step 4: Simplify right side
    185,705.18x = 18,778,278,370.19
  5. Step 5: Solve for x
    x = 18,778,278,370.19/185,705.18
  6. Step 6: Final answer
    x = 101,118.76

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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.