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Finding the Fourth Proportional to 111,827.80, 167,741.70 and 72,429.40

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Solution

The fourth proportional to 111,827.80, 167,741.70 and 72,429.40 is: 108,644.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,827.80 : 167,741.70 = 72,429.40 : x
  2. Step 2: Convert to fraction form
    111,827.80/167,741.70 = 72,429.40/x
  3. Step 3: Cross multiply
    111,827.80x = 167,741.70 × 72,429.40
  4. Step 4: Simplify right side
    111,827.80x = 12,149,430,685.98
  5. Step 5: Solve for x
    x = 12,149,430,685.98/111,827.80
  6. Step 6: Final answer
    x = 108,644.10

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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.