Home / 117,638.20-176,226.90-70,751.80

Finding the Fourth Proportional to 117,638.20, 176,226.90 and 70,751.80

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Solution

The fourth proportional to 117,638.20, 176,226.90 and 70,751.80 is: 105,989.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,638.20 : 176,226.90 = 70,751.80 : x
  2. Step 2: Convert to fraction form
    117,638.20/176,226.90 = 70,751.80/x
  3. Step 3: Cross multiply
    117,638.20x = 176,226.90 × 70,751.80
  4. Step 4: Simplify right side
    117,638.20x = 12,468,370,383.42
  5. Step 5: Solve for x
    x = 12,468,370,383.42/117,638.20
  6. Step 6: Final answer
    x = 105,989.13

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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.