Home / 111,936.80-167,905.20-99,689.60

Finding the Fourth Proportional to 111,936.80, 167,905.20 and 99,689.60

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Solution

The fourth proportional to 111,936.80, 167,905.20 and 99,689.60 is: 149,534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,936.80 : 167,905.20 = 99,689.60 : x
  2. Step 2: Convert to fraction form
    111,936.80/167,905.20 = 99,689.60/x
  3. Step 3: Cross multiply
    111,936.80x = 167,905.20 × 99,689.60
  4. Step 4: Simplify right side
    111,936.80x = 16,738,402,225.92
  5. Step 5: Solve for x
    x = 16,738,402,225.92/111,936.80
  6. Step 6: Final answer
    x = 149,534.40

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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.