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Finding the Fourth Proportional to 111,813.58, 167,720.34 and 76,646.62

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Solution

The fourth proportional to 111,813.58, 167,720.34 and 76,646.62 is: 114,969.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,813.58 : 167,720.34 = 76,646.62 : x
  2. Step 2: Convert to fraction form
    111,813.58/167,720.34 = 76,646.62/x
  3. Step 3: Cross multiply
    111,813.58x = 167,720.34 × 76,646.62
  4. Step 4: Simplify right side
    111,813.58x = 12,855,197,166.25
  5. Step 5: Solve for x
    x = 12,855,197,166.25/111,813.58
  6. Step 6: Final answer
    x = 114,969.91

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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.