Home / 185,486.50-278,265.83-78,869.23

Finding the Fourth Proportional to 185,486.50, 278,265.83 and 78,869.23

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Solution

The fourth proportional to 185,486.50, 278,265.83 and 78,869.23 is: 118,319.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,486.50 : 278,265.83 = 78,869.23 : x
  2. Step 2: Convert to fraction form
    185,486.50/278,265.83 = 78,869.23/x
  3. Step 3: Cross multiply
    185,486.50x = 278,265.83 × 78,869.23
  4. Step 4: Simplify right side
    185,486.50x = 21,946,611,747.41
  5. Step 5: Solve for x
    x = 21,946,611,747.41/185,486.50
  6. Step 6: Final answer
    x = 118,319.19

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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.