Home / 119,806.20-179,622.90-78,276.60

Finding the Fourth Proportional to 119,806.20, 179,622.90 and 78,276.60

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Solution

The fourth proportional to 119,806.20, 179,622.90 and 78,276.60 is: 117,358.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,806.20 : 179,622.90 = 78,276.60 : x
  2. Step 2: Convert to fraction form
    119,806.20/179,622.90 = 78,276.60/x
  3. Step 3: Cross multiply
    119,806.20x = 179,622.90 × 78,276.60
  4. Step 4: Simplify right side
    119,806.20x = 14,060,269,894.14
  5. Step 5: Solve for x
    x = 14,060,269,894.14/119,806.20
  6. Step 6: Final answer
    x = 117,358.45

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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.